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Tomorrow, Pete must finish paying off the last $90 he owes on a bike. He goes through his wallet and finds two $20 bills. Checking his pockets, he finds four $10 bills. Unhappy that he doesn't have the entire amount, he suddenly remembers that he has plastic bottles that can be returned to his local store for cash. If the store pays 50 cents for each bottle, how many bottles will Pete have to return to the store?
Pete’s wallet contains 2 * 20 = <<2*20=40>>40 dollars The money in Pete’s pockets is 4 * 10 = <<4*10=40>>40 dollars In total Pete has 40 + 40 = <<40+40=80>>80 dollars He owes 90 dollars on the bike and therefore needs 90 - 80 = <<90-80=10>>10 more dollars Since 50 cents is ½ dollar, then the number of bottles required to get 10 dollars is 10 / (1/2) = 10*2 = <<10/(1/2)=20>>20 bottles. #### 20
Blake needs to prime and paint 5 rooms in his house. Each room will require a gallon of primer and a gallon of paint. Currently the primer is $30.00 a gallon and they are offering 20% off. The paint costs $25.00 a gallon and is not on sale. How much will he spend on paint and primer?
The primer is $30.00 with 20% off so that's 30*.20 = $<<30*.20=6.00>>6.00 off The primer is $30.00 and the discount is for $6.00 off so the sale price is 30-6 = $<<30-6=24.00>>24.00 per gallon Blake needs 5 gallons of primer that is $24.00 a gallon so that's 5*24 = $<<5*24=120.00>>120.00 He needs 5 gallons of paint that cost $25.00 a gallon so that's 5*25 = $<<5*25=125.00>>125.00 The primer is $120.00 and the paint is $125.00 so all total, he will spend 120+125 = $<<120+125=245.00>>245.00 on paint and primer #### 245
Bethany is working at the front desk at Joe’s Gym. There were some people lifting weights when she started her shift. Then 5 more people came in and started running on the treadmill and 2 people left. There are now 19 people in the gym. How many people were lifting weights at the start of Bethany’s shift?
We know that 5 people came in and 2 people left after Bethany’s shift started, so there was a net change of 5 – 2 = <<5-2=3>>3 people. If there are 19 people now in the gym and that is 3 more than when Bethany’s shift started, we know there were 19 – 3 = <<19-3=16>>16 people lifting weights at the start of her shift. #### 16
A farmer living in the countryside has a certain number of children. One day, they followed him to the farm, each one with a bag to collect harvested apples. At the end of the day, each bag was filled with 15 apples each. On their way back home, 2 of the children have eaten 4 apples each and another child sold 7 of his apples. If they had a total of 60 apples left by the time they got home, how many children does the farmer have?
2 children sold 4 apples each which gives 2*4 = <<2*4=8>>8 apples Another child gave out an additional 7 apples making 8+7 = <<8+7=15>>15 apples removed from the total There were 60 apples left after these, so the original total must have been 15+60 = <<15+60=75>>75 apples Each child collected 15 apples so there are 75/15 = 5 children #### 5
Mark constructs a cube of pure gold. The cube is 6 cm on each side. The density of gold is 19 grams per cubic centimeter. He buys the gold for $60 per gram. He sells it for 1.5 times its gold value. What was the profit?
The cube is 6*6*6=<<6*6*6=216>>216 cubic cm So it has a mass of 216*19=<<216*19=4104>>4104 grams So it uses 60*4104=$<<60*4104=246240>>246240 That means he sells it for 246240*1.5=$<<246240*1.5=369360>>369360 So he has a profit of 369360-246240=$<<369360-246240=123120>>123,120 #### 123120
Kate loves painting. She decided to go to an Art-museum in her city. The entrance fee is $5. Kate loved the visit so much, that she decided to go there once a month. After 1 year, the ticket price increased to $7 and Kate decided she is going to visit the museum only 4 times a year. How much did Kate pay for all visits to the Art-museum after 3 years of visiting?
One year is 12 months, so during the first year, Kate spent $5/month * 12 months/year = $<<5*12=60>>60/year on the tickets. After that, she went to the museum for 3 years - 1 year = <<3-1=2>>2 more years. During this time, she visited the museum 2 years * 4 visits/year = <<2*4=8>>8 visits. She had to pay the higher price of $7, so she spent $7/visit * 8 visits = $<<7*8=56>>56 in two last years. In total Kate paid $56 + $60 = $<<56+60=116>>116 during 3 years. #### 116
The chicken crossed the road to get to the other side twice for the thrill of it. The first time, it had to dodge 23 speeding cars. The second time, a person tried to catch it and accidentally pulled out twice as many feathers as the number of cars the chicken had dodged. The chicken had 5263 feathers before its thrill-seeking road crossings. How many feathers did it have afterward?
The chicken lost 23 * 2 = <<23*2=46>>46 feathers on its second road crossing. Thus, it had 5263 - 46 = <<5263-46=5217>>5217 feathers after crossing the road twice. #### 5217
Wario is a field goal kicker on the high school football team. He attempts 60 field goals throughout the season. He misses 1/4 of the field goals. Of the field goals missed 20 percent were wide right. How many missed field goals went wide right?
Missed:60/4=<<60/4=15>>15 Wide Right:15(.20)=3 field goals #### 3
Lulu has $65 in her piggy bank. She spent $5 on ice cream. She then spent half of the remainder of the money on a t-shirt. Afterwards, she went to the bank and deposited a fifth of her remaining money. How much cash was Lulu left with?
Lulu had 65-5 = <<65-5=60>>60 dollars left after eating ice cream. Lulu had 60/2 = <<60/2=30>>30 dollars left. Lulu deposited 30/5 = <<30/5=6>>6 dollars Lulu was left with 30-6 = <<30-6=24>>24 in cash. #### 24
A frog pond has five frogs living in it. Some frogs laid eggs, and now there are three times as many tadpoles growing into more frogs as there are frogs. Two-thirds of the tadpoles will survive to maturity as frogs. The pond can only sustain eight frogs. How many frogs will have to find a new pond when the tadpoles grow up?
There are three times the number of tadpoles as frogs, so there are 3 * 5 = <<3*5=15>>15 tadpoles. Two-thirds of the tadpoles will survive to become frogs, so 2 * 15 / 3 = <<2*15/3=10>>10 tadpoles will grow into frogs. When the tadpoles grow up, there will be 5 + 10 = <<5+10=15>>15 frogs in the pond. The pond can only sustain 8 frogs, so 15 - 8 = <<15-8=7>>7 frogs will need to find a new pond. #### 7
Three baskets A, B and C contain different numbers of differently colored marbles. Basket A contains 4 red marbles and 2 yellow marbles. Basket B contains 6 green marbles and 1 yellow marble. Basket C contains 3 white marbles and 9 yellow marbles. What is the difference between the number of each color of marble in the basket that has the greatest difference?
In basket A the number difference between differently colored marbles is 4-2 = <<4-2=2>>2 In basket B the difference is 6-1 = <<6-1=5>>5 In basket C the difference is 9-3 = <<9-3=6>>6 Comparing 2, 5 and 6 shows that 6 is the greatest difference #### 6
Fred was having a party and was responsible for buying canned soda. He figured every guest would drink 2 sodas and he was inviting 15 people to the party. The local store had a deal on sodas that week. Every 6 pack of canned sodas was on sale for $3.00. How much would it cost Fred to buy enough sodas for every guest to have 2 cans?
He planned on 2 sodas per guest and invited 15 guests so 2*15 =<<2*15=30>>30 cans of soda Each pack of soda had 6 cans. He needed to buy 30 cans of soda for his guest so 30/6 = <<30/6=5>>5 packs of soda The soda was on sale for $3.00 per 6 pack and he was buying 5 packs so 3*5 = $<<3*5=15.00>>15.00 for soda #### 15
A vendor at the market is selling sunglasses for $30 each. He has to spend a certain amount to buy these sunglasses. He sells 10 pairs in a day. He then takes half his profits and uses it to buy a new sign, which costs $20. How much does each pair of sunglasses cost him to buy?
His profits were $40 because 20 / .5 = <<20/.5=40>>40 He made $300 selling sunglasses because 10 x 30 = <<10*30=300>>300 His costs for the sunglasses were $260 because 300 - 40 = <<300-40=260>>260 The sunglasses cost him $26 each because 260 / 10 = <<260/10=26>>26 #### 26
Hannah wants to get the highest grade in the class on the upcoming math test. Because she is out sick the day of the test, she learns ahead of time the top scores she has to beat. She finds out that one student got a 95% on the exam. Another student only got 3 wrong out of 40. How many questions does she have to get right to have the highest score in the class?
One student got 37 questions right because 40 - 3 = <<40-3=37>>37 This student's proportion right is .925 because 37 / 40 = <<37/40=.925>>.925 This student got a 92.5% because .925 x 100 = <<.925*100=92.5>>92.5 The student got got a 95% got 38 right because 40 x .95 = <<40*.95=38>>38 Hannah must beat the student who got a 38 because 38 > 37 Hannah needs to get 39 questions right because 38 + 1 = <<38+1=39>>39 #### 39
There was a big sale on cat food at the pet store. 20 people bought cat food that day. The first 8 customers bought 3 cases each. The next four customers bought 2 cases each. The last 8 customers of the day only bought 1 case each. How many cases of cat food were sold?
The first 8 customers bought 8*3=<<8*3=24>>24 cases The next 4 customers bought 4*2=<<4*2=8>>8 cases The last 8 customers bought 8*1=<<8*1=8>>8 In total 24+8+8=<<24+8+8=40>>40 cases were sold #### 40
Paul needed to buy some new clothes for work. He had a 10% off coupon that he could use on his entire purchase after any other discounts. Paul bought 4 dress shirts at $15.00 apiece, 2 pairs of pants that each cost $40.00. He found a suit for $150.00 and 2 sweaters for $30.00 each. When he got to the register, the clerk told him that the store was offering 20% off of everything in the store. After the discounts and the coupon, how much did Paul spend on his new clothes?
4 dress shirts cost $15.00 each so 4*15 = $<<4*15=60.00>>60.00 2 pants at $40.00 cost 2*40 = $<<2*40=80.00>>80.00 2 sweaters at $30.00 cost 2*30 = $<<2*30=60.00>>60.00 Add the suit at $150 and the other items the total was 150+60+80+60 = $<<150+60+80+60=350>>350 The store has having a 20% off sale so .20*350 = $<<350*.20=70.00>>70.00 discount His new total would be 350-70 = $<<350-70=280.00>>280.00 Then add his 10% discount, .10*280= $<<28=28.00>>28.00 additional off His final total came out to 280-28 = $<<280-28=252.00>>252.00 #### 252
Nora is selling muffins to raise $120 for an upcoming school trip. She has packaged the muffins in cases. Each case has three packs of muffins. Each pack has four muffins. If she prices each muffin at two dollars, how many cases of muffins must she sell to raise enough money for the trip?
If Nora prices each muffin at two dollars, she will sell 1 pack for 2 * 4 = <<1*2*4=8>>8 dollars Since there are 3 packs to a case, the case will be sold for 3 * 8 = <<3*8=24>>24 dollars It therefore means that she needs to sell 120/24 = <<120/24=5>>5 cases of muffins. #### 5
A man loves to go hiking. He knows that he has to pack about .5 pounds of supplies for every mile he hikes. He plans to go for a very long hike. He knows that he can get 1 resupply during the hike that will be 25% as large as his first pack. He can hike at a rate of 2.5 mph. He is going to hike 8 hours a day for 5 days. How much does he need to bring with his first pack?
He is going to hike 8*=40 hours That means he will be hiking for 40*2.5=<<40*2.5=100>>100 miles So he needs 100*.5=<<100*.5=50>>50 pounds of supplies With the resupply he can get up to 1+.25=<<1+.25=1.25>>1.25 times his initial pack That means his initial pack has to weigh 50/1.25=<<50/1.25=40>>40 pounds #### 40
Scout delivers groceries on the weekends. His base pay is $10.00 an hour. He also earns a $5.00 tip per customer that he delivers groceries to. On Saturday he worked 4 hours and delivered groceries to 5 people. Sunday he worked 5 hours and delivered groceries to 8 people. How much did he make over the weekend?
He worked 4 hours on Saturday and 5 hours on Sunday for a total of 4+5 = <<4+5=9>>9 hours His base pay is $10.00 an hour and he worked 9 hours for a total of 10*9 = $<<10*9=90.00>>90.00 He delivered groceries to 5 people on Saturday and 8 people on Sunday for a total of 5+8 = <<5+8=13>>13 deliveries He makes $5.00 per delivery and he delivered to 13 people so he made 5*13 = $<<5*13=65.00>>65.00 His base pay is $90.00 and he made $65.00 in tips for a total of 90+65 = $<<90+65=155.00>>155.00 #### 155
Roberto is raising chickens for eggs. He buys 4 chickens for $20 each. They cost $1 in total a week to feed and each produces 3 eggs a week that will last forever. He used to buy 1 dozen eggs a week and spent $2 per dozen. After how many weeks will the chickens be cheaper than buying his eggs?
The chickens cost $80 because 4 x 20 = <<4*20=80>>80 His chickens produce a dozen eggs a week because 4 x 3 = <<4*3=12>>12 Each week that he has chickens is $1 cheaper than buying eggs because 2 - 1 = <<2-1=1>>1 After 80 weeks his chickens will be paid off because 80 / 1 = <<80/1=80>>80 After 81 weeks the chickens will be cheaper than buying eggs because 80 + 1 = <<80+1=81>>81 #### 81
Claire has 400 flowers in her garden. One hundred twenty are tulips, and the rest are roses. Eighty of the roses are white, while the rest are red. Each red rose is worth $0.75. How much will Claire earn if she can sell 1/2 of the total number of red roses?
Claire has 400 - 120 = <<400-120=280>>280 roses in her garden. Thus, she has 280 - 80 = <<280-80=200>>200 red roses. One-half of the red roses is equal to 1/2 x 200 = <<1/2*200=100>>100. Therefore, Claire will earn $0.75 x 100 = $75 if she can sell 1/2 of the total number of red roses. #### 75
A local music festival is held every year for three days. The three day attendance this year was 2700 people. The second day was rainy so only half the number of people that showed up the first day showed up the second day. The third day was the finale, so attendance was triple the original day. How many people attended the second day of the festival?
Let x represent the attendance the first day Second day: x/2 Third day: 3x Total:x+(x/2)+3x=<<2700=2700>>2700 (9/2)x=2700 9x=5400 x=<<600=600>>600 Second day:600/2=<<600/2=300>>300 people #### 300
In Rodrigo's classroom in the morning there are red chairs, yellow chairs, and blue chairs. There are 4 red chairs. There are 2 times as many yellow chairs as red chairs, and there are 2 fewer blue chairs than yellow chairs. In the afternoon, Lisa borrows 3 chairs. How many chairs are left in Rodrigo's classroom?
There are 2 * 4 red chairs = <<2*4=8>>8 yellow chairs. There are 8 yellow chairs - 2 = <<8-2=6>>6 blue chairs. Total in the morning there were 4 red + 8 yellow + 6 blue = <<4+8+6=18>>18 chairs. After Lisa removed chairs there were 18 - 3 chairs = <<18-3=15>>15 chairs remaining. #### 15
Mr. Fortchaud turns on his heater on the 1st of November, 2005. The fuel tank was then full and contained 3,000 L. On January 1, 2006, the tank counter indicated that 180 L remained. Mr. Fortchaud again filled his tank completely. On 1 May 2006, Mr. Fortchaud decided to stop heating and he read 1,238 L on the meter. What the volume of fuel oil that was used between 1 November 2005 and 1 May 2006?
I calculate consumption between November 1, 2005 and January 1, 2006: 3,000 – 180 = <<3000-180=2820>>2820 L I calculate consumption between January 1, 2006 and May 1, 2006: 3,000 – 1238 = <<3000-1238=1762>>1762 L I calculate the total consumption between November 1st and May 1st: 2,820 + 1,762 = <<2820+1762=4582>>4582 L #### 4,582
Sidney has 4 kittens and 3 adult cats. She has 7 cans of cat food. Each adult cat eats 1 can of food per day. Each kitten eats 3/4 of a can per day. How many additional cans of food does Sidney need to buy to feed all of her animals for 7 days.
Sidney has 3 adult cats * 1 can of food = <<3*1=3>>3 cans of food per day. Sidney's adult cats will need 3 cans * 7 days = <<3*7=21>>21 cans for the week. Sidney has 4 kittens * 3/4 cup of food = <<4*3/4=3>>3 cans of food per day. Sidney's kittens will need 3 cans * 7 days = <<3*7=21>>21 cans for the week. Sidney will need to buy 21 cans + 21 cans - 7 cans = <<21+21-7=35>>35 cans. #### 35
A farmer plants his vegetables in neat rows. He has 64 bean seedlings and plants 8 seedlings in a row. He also has 84 pumpkin seeds and plants 7 seeds in a row. Recently, he planted 48 radishes with 6 radishes in a row. If the farmer plants two rows per plant bed, how many plant beds did he have for all his plants?
There are 64/8 = <<64/8=8>>8 rows of bean seedlings. There are 84/7 = <<84/7=12>>12 rows of pumpkin seedlings. There are 48/6 = <<48/6=8>>8 rows of radishes. Thus, there are a total of 8 + 12 + 8 = <<8+12+8=28>>28 rows of vegetables. Therefore, the farmer had 28/2 = <<28/2=14>>14 plant beds. #### 14
Linda is painting her bedroom. Her bedroom has 4 walls, with the room being 20 feet wide by 20 feet long by 8 feet tall. One wall has a 3-foot by 7-foot doorway. A second wall has a 6-foot by 4-foot window. A third wall has a 5-foot by 7-foot doorway to a walk-in-closet. And the fourth wall is completely solid. What is the total area of wall space that Linda will have to paint?
The solid wall is 8 ft. * 20 ft. = <<8*20=160>>160 sq. ft. The doorway is 3 ft. * 7 ft. = <<3*7=21>>21 sq. ft. The window is 6 ft. * 4 ft. = <<6*4=24>>24 sq. ft. The closet door is 5 ft. * 7 ft. = <<5*7=35>>35 sq. ft. The total area of the doors and windows is 21 sq. ft + 24 sq. ft. + 35 sq. ft. = <<21+24+35=80>>80 sq. ft. The solid wall is 160 sq. ft., so before the areas of the doors and window are taken into account, the total wall area is 4 * 160 sq. ft. = <<4*160=640>>640 sq. ft. Taking into account the doors and window, the total wall area Linda will have to paint is 640 sq. ft. - 80 sq. ft. = <<640-80=560>>560 sq. ft. #### 560
Mark just got a new puppy that cost $10. He also bought enough food for 3 weeks. He knows the puppy eats 1/3 cup of food a day. A bag of food with 3.5 cups costs $2. How much did all of this cost him?
He needs food for 21 days because 3 x 7 = <<3*7=21>>21 The puppy will eat 7 cups of food because 21 x (1/3) = <<21*(1/3)=7>>7 He needs 2 bags of food because 7 / 3.5 = <<7/3.5=2>>2 The food will cost him $4 because 2 x 2 = <<2*2=4>>4 It will cost $14 in total because 10 + 4 = <<10+4=14>>14 #### 14
Trevor is a comic book illustrator. In the past three months, he has drawn 220 pages of the comic. The comic he illustrates releases a new issue once a month. The first and second months’ issues were the same number of pages, but the third month’s issue was four pages longer than either of the others. How many pages was the first issue of the comic?
Let P be the number of pages of the first issue of the comic. The second issue is the same number of pages, so the first and second issues are P + P = 2P pages. The third issue is 4 pages longer, so it is P + 4 pages. All three issues are 2P + P + 4 = 3P + 4 = 220 pages long. Thus, 3P = 220 - 4 = 216 pages. Therefore, the first issue of the comic was P = 216 / 3 = <<216/3=72>>72 pages. #### 72
Phillip wants to make pickles with the supplies he finds at home. He has 4 jars, 10 cucumbers, and 100 oz of vinegar. Each cucumber makes six pickles. Each jar can hold 12 pickles. It takes 10 ounces of vinegar per jar of pickles. When he is all done making as many pickles as he has supplies for, how many ounces of vinegar are left?
The jars allow him to make 48 pickles because 4 x 12 = <<4*12=48>>48 The cucumbers allow him to make 60 pickles because 10 x 6 = <<10*6=60>>60 The vinegar allows him to make 10 jars of pickles because 100 / 10 = <<100/10=10>>10 The vinegar is enough to make 60 pickles because 10 x 6 = <<10*6=60>>60 He can make 48 pickles because 48 < 60 He needs 4 jars to make this because 48 / 12 = <<48/12=4>>4 He needs 40 ounces of vinegar because 4 x 10 = <<4*10=40>>40 He has 60 ounces remaining because 100 - 40 = <<100-40=60>>60 #### 60
A fifth-grade class went on a field trip to the zoo, and their class of 10 students merged with another class with the same amount of students. 5 parents offered to be a chaperone, and 2 of the teachers from both classes will be there too. When the school day was over, the students could choose to go home and 10 of them left. Two of the chaperones were parents in that group, so they left as well. How many individuals were left at the zoo?
A total of 10*2=<<10*2=20>>20 students went on the field trip. Some chaperones showed up, letting the group grow to 20+5=<<20+5=25>>25 individuals. The teachers had to come as well, making the group as big as 25+2=<<25+2=27>>27 individuals. When the school day ended, 27-10=<<27-10=17>>17 individuals were left. A couple of chaperones followed suit, leaving 17-2=<<17-2=15>>15 people at the zoo. #### 15
Pirate Rick sailed his ship to a tropical island in search of a site to bury his treasure. After finding the perfect site, it took him 4 hours to dig up 8 feet of sand under which to bury the treasure. Once the treasure was buried, he left the island. Then, a tropical storm came and washed away half of the sand from on top of the treasure. Next, a giant tsunami wave poured over the island, adding 2 feet of new sand back onto the site of his treasure. When Pirate Rick returned, how long did it take for him to dig up his treasure?
Pirate Rick digs at a rate of 8 feet of sand per 4 hours, or 8/4=<<8/4=2>>2 feet per hour. Of the 8 feet of sand that were initially on top of the treasure, the storm washed 8/2=<<8/2=4>>4 feet of sand away. Thus, after the storm and the tsunami, the treasure was buried beneath 8-4+2=<<8-4+2=6>>6 feet of sand. Digging at a rate of 2 feet per hour, Pirate Rick could uncover his treasure in 6/2=3 hours. #### 3
A road has four intersections. At the first intersection, there are 40 road signs showing different types of information mounted on the street poles. At the second intersection, 1/4 times more road signs than the first intersection are mounted on the street poles. The number of road signs at the third intersection is twice the number at the second intersection. If at the fourth intersection the number of road signs is 20 fewer than those at the third intersection, calculate the total number of road signs at the four intersections.
There are 1/4*40 = <<1/4*40=10>>10 more road signs at the second intersection than the first intersection. This means there are 40+10 =<<40+10=50>>50 road signs at the second intersection. The total number of road signs at the first and second intersection is 50+40 = <<50+40=90>>90 The third intersection has twice the number of road signs at the second intersection, meaning there are 2*50 = <<2*50=100>>100 road signs. The total number of road signs at first to the third intersection is 90+100 = <<90+100=190>>190 road signs. At the fourth intersection, the number is 20 fewer than at the third intersection, meaning there are 100-20 = <<100-20=80>>80 road signs. All four road intersections have 190+80 = <<190+80=270>>270 road signs in total. #### 270
Brooke is milking cows and then selling the milk at the market for $3 a gallon. Whatever milk doesn't sell, she turns into butter. One gallon of milk equals 2 sticks of butter. She then sells the butter for $1.5 a stick. She has 12 cows. Each cow produces 4 gallons of milk. She has 6 customers, each of whom wants 6 gallons of milk. How much money does she earn if she sells all her milk and butter?
A gallon of milk makes $3 worth of butter because 2 x 1.5 = <<2*1.5=3>>3 A gallon of milk sells for the same amount as milk or butter because 3 = <<3=3>>3 She gets 48 gallons of milk because 4 x 12 = <<4*12=48>>48 She earns $144 selling the milk because 48 x $3 = <<48*3=144>>144 #### 144
There's a sale at your favorite "Any item $10" retailer. If you buy 1 shirt you pay $10. If you buy 2, you get the second one at a 50% discount. If you buy 3, you get the third one at a 60% discount. How much money did you save if you bought 3 shirts?
The first shirt has no (0%) discount off the regular price ($10), therefore your discount is = 0% * $10 = $<<0*.01*10=0>>0 The second shirt has a 50% discount off the regular price ($10), therefore your discount is = 50% * $10 = $<<50*.01*10=5>>5 The third shirt has a 60% discount of the regular price ($10), therefore your discount is = 60% * $10 = $<<60*.01*10=6>>6 Therefore in total, you save $0 on the first shirt, $5 on the second one and $6 on the third one = 0+5+6 = $<<0+5+6=11>>11 #### 11
Helen cuts her lawn starting in March and finishes in October. Her lawn mower uses 2 gallons of gas every 4th time she cuts her lawn. For March, April, September and October, she only cuts her law 2 times per month. In May, June, July and August, she has to cut her lawn 4 times per month. How many gallons of gas will she need to cut her lawn from March through October?
For March, April, September and October, she cuts her lawn 2 a month. There are 4 months so she cuts her yard 2*4 = <<2*4=8>>8 times For May, June, July and August, she cuts her lawn 4 times a month. There are 4 months so she cuts her yard 4*4 = <<4*4=16>>16 times During the entire 8 month period, she cuts her lawn 8+16 = <<8+16=24>>24 times Every 4th time she cuts, she needs 2 gallons of gas. If she cuts her lawn 24 times a year then she needs to fill up 24/4 = 6 times Each time she fills up, it takes 2 gallons of gas so 2*6 = <<2*6=12>>12 gallons of gas per year #### 12
Denmark wants to order pizza. For toppings, he has 3 cheese, 4 meat and 5 vegetable options, one of which is peppers. He can have only one selection from each topping category (one cheese, one meat and one vegetable). However, if he chooses to have pepperoni, he cannot have peppers. How many topping combinations does he have total?
Permutate the ingredients. 3 cheeses * 4 meats * 5 vegetables = <<3*4*5=60>>60 choice However, we must take out the combinations that could have pepperoni and peppers, 1 cheese +1 meat *+1 vegetable = <<1+1+1=3>>3 bad choices 60 - 3 = <<60-3=57>>57 choices #### 57
To get ready for the new school year, Mary brought her two kids shopping. She bought her son James, a coat for $40 and two pairs of jeans. She bought his sister Jamie, a pair of shoes for $30. The total cost of the items was $110. If the two pairs of jeans for James cost the same price, how much did one pair of jeans cost?
The total spent on both pairs of jeans was $110 - $40 - $30 = $<<110-40-30=40>>40. One pair of jeans would cost $40 / 2 = $<<40/2=20>>20. #### 20
Apollo pulls the sun across the sky every night. Once a month, his fiery chariot’s wheels need to be replaced. He trades golden apples to Hephaestus the blacksmith to get Hephaestus to make him new wheels. Hephaestus raised his rates halfway through the year and now demands twice as many golden apples as before. He charged three golden apples for the first six months. How many golden apples does Apollo have to pay for the entire year of chariot wheels?
Apollo had to pay 3 * 6 = <<3*6=18>>18 golden apples for the first six months. For the second six months, he had to pay twice that amount, or 18 * 2 = <<18*2=36>>36 golden apples. Thus, Apollo had to pay 18 + 36 = <<18+36=54>>54 golden apples for a year of chariot wheels. #### 54
John works at 2 different hospitals. At the first hospital, he sees 20 different patients each day. At the second hospital, he sees 20% more individual patients a day. He works 5 days a week. How many patients does he treat a year if he works 50 weeks a year?
He treats 20*.2=<<20*.2=4>>4 extra patients So he treats 20+4=<<20+4=24>>24 patients at the second hospital So he treats 20+24=<<20+24=44>>44 patients a day That means he treats 44*5=<<44*5=220>>220 patients a week So he treats 220*50=<<220*50=11000>>11,000 patients a year #### 11000
Jame gets 20 singing lessons. He gets the first lesson free and after the first 10 paid lessons he only needs to pay for every other lesson. Each lesson is $5. His uncle pays for half. How much does James pay?
The first lesson is free. The lessons 2 to 11 cost 10*$5=$<<10*5=50>>50. He then had 9 remaining lessons where he had to pay for every other one. So he pays for lessons 13,15,17&19 = 4 lessons. Those lessons cost 4*$5=$<<4*5=20>>20. So in total, the cost was $50+$20=$<<50+20=70>>70. So he paid $70/2=$<<70/2=35>>35. #### 35
Grace baked 4 whole pumpkin pies. She sold 1 whole pumpkin pie and gave 1 whole pumpkin pie to her friend. The remaining whole pumpkin pies were each sliced into 6 pieces. Her family ate 2/3 pieces. How many pieces of pumpkin pie were left?
Grace sold and gave a total of 1 + 1 = <<1+1=2>>2 whole pumpkin pie. Her family was left with 4 - 2 = <<4-2=2>>2 whole pumpkin pie. There were a total of 2 x 6 = <<2*6=12>>12 pieces made from the 2 whole pumpkin pie. Her family ate 12 x 2/3 = <<12*2/3=8>>8 pieces. Therefore, 12 - 8 = <<12-8=4>>4 pieces of pumpkin pie were left. #### 4
Janette went camping for 5 days. She brought along 40 pieces of beef jerky. She wants to ration it out so that she can eat 1 for breakfast, 1 for lunch, and 2 for dinner each day. When she returns from the trip, she plans on giving half of the remaining pieces to her brother. How many pieces of beef jerky will she have left once she does this?
Each day she eats a total of 1 + 1 + 2 = <<1+1+2=4>>4 pieces of jerky. For the entire trip, she will consume a total of 4 * 5 = <<4*5=20>>20 pieces of jerky. She gives half to her brother, which will leave her a total of 20 / 2 = <<20/2=10>>10 pieces of jerky. #### 10
Bob has a cube of silver that measures 3 inches on each side. A cubic inch of silver weighs 6 ounces. Each ounce of silver sells for $25. He sells it for 110% of its silver value. How much does he sell it for?
The silver has a volume of 3*3*3=<<3*3*3=27>>27 cubic inches So it weighs 27*6=<<27*6=162>>162 ounces So its value is 162*25=$<<162*25=4050>>4050 That means he sold it for 4050*1.1=$<<4050*1.1=4455>>4455 #### 4455
In today's field day challenge, the 4th graders were competing against the 5th graders. Each grade had 2 different classes. The first 4th grade class had 12 girls and 13 boys. The second 4th grade class had 15 girls and 11 boys. The first 5th grade class had 9 girls and 13 boys while the second 5th grade class had 10 girls and 11 boys. In total, how many more boys were competing than girls?
When you add up all the girls from all 4 classes, you had 12+15+9+10= <<12+15+9+10=46>>46 girls When you add up all the boys from all 4 classes, you had 13+11+13+11 = <<13+11+13+11=48>>48 boys There are 48 boys and 36 girls so 48-46 = 2 more boys #### 2
The school store had a sale on pencils. Ten students bought pencils. The first two students bought 2 pencils each. The next six students bought three pencils each and the last two students only bought one pencil each. How many pencils were sold?
The first students bought 2*2=<<2*2=4>>4 pencils The next 6 students bought 6*3=<<6*3=18>>18 pencils The last two students bought 1+1=<<1+1=2>>2 pencils In total the store sold 4+18+2=<<4+18+2=24>>24 pencils #### 24
Nikola is saving up for a bag of ant food before he can start his ant farm. He wants 400 ants in his farm. Each ant needs 2 ounces of food. Every ounce of ant food costs $.1. Nikola is saving up by raking leaves. He charges $5 to start a job and then he charges by the leaf. Each leaf he rakes costs 1 penny. He finally saved up enough money after he raked 6,000 leaves. How many jobs did he complete?
The ants will need 800 ounces of food because 400 x 2 = <<400*2=800>>800 The ant food will cost $80 because 800 x .1 = <<800*.1=80>>80 He has earned $60 from the leaves he has raked because 6000 leaves * $0.01/leaf = $<<6000*0.01=60>>60 He earned $20 from all his jobs because 80 - 60 = <<80-60=20>>20 He completed 4 jobs because 20 / 5 = <<20/5=4>>4 #### 4
А Senior Center is hosting a bingo night. $2,400 in prize money will be given away. The first winner of the night will receive a third of the money. The next ten winners will each receive a 10th of the remaining amount. How many dollars will each of the next ten winners receive?
The first winner will receive 2400 / 3 = $<<2400/3=800>>800. There will be 2400 - 800 = $<<2400-800=1600>>1600 left. The other winners will receive 1600 / 10 = $<<1600/10=160>>160 each. #### 160
Mark is filling a punch bowl that can hold 16 gallons of punch. He fills it part way, then his cousin comes along and drinks half the punch in the bowl. Mark starts to refill the bowl and adds 4 more gallons, but then his friend Sally comes in and drinks 2 more gallons of punch. After that, Mark has to add 12 gallons of punch to completely fill the bowl. How much punch did Mark initially add to the bowl?
First, figure out how much punch was left in the bowl before Mark refilled it by subtracting the 12 gallons he added from the bowl's total capacity: 16 - 12 = <<16-12=4>>4 gallons Next, figure out how much punch was in the bowl before Sally came along: 4 + 2 = <<4+2=6>>6 gallons. Next, figure out how much punch was in the bowl before Mark started to refill it: 6 - 4 = <<6-4=2>>2 gallons Finally, multiply that amount by 2 to find out how much punch there was before the cousin drank half: 2 * 2 = <<4=4>>4 gallons #### 4
Michael and Thomas are selling their lego collections. They agree to split any money they earn. They sell them based on how many circles are on top. Each circle costs 1 cent. They earned $5 each after selling 100 single pieces, 45 double pieces, 50 triple pieces and a number of quadruple pieces. How many quadruple pieces did they sell?
They made $10 because 2 x 5 = <<2*5=10>>10 They made $1 off single pieces because 100 x .01 = <<100*.01=1>>1 They made $.9 off double pieces because 45 x .02 = <<45*.02=.9>>.9 They made $1.5 off triple pieces because 50 x .03 = <<50*.03=1.5>>1.5 They earned $3.4 off the first three types because 1 + .9 + 1.5 = <<1+.9+1.5=3.4>>3.4 They earned $6.6 off the quadruple pieces because 10 - 3.4 = <<10-3.4=6.6>>6.6 They sold 165 quadruple pieces because 6.6 / .04 = <<6.6/.04=165>>165 #### 165
There were 50 people on the city bus. At the first stop, 15 people got off. At the next stop 8 people got off and 2 got on. At the third stop, 4 people got off and 3 people got on. How many people are on the bus after the third stop?
The bus started with 50 people – 15 who got off at the first stop = <<50-15=35>>35 people on the bus. At the second stop, 35 people on the bus – 8 who got off = <<35-8=27>>27 people. Then there were 27 people + 2 who got on = <<27+2=29>>29 people on the bus. At the third stop, 29 people on the bus – 4 who got off = <<29-4=25>>25 people on the bus. Then there were 25 people on the bus + 3 who got on = <<25+3=28>>28 people on the bus. #### 28
James and John combine their friends lists. James has 75 friends. John has 3 times as many friends as James. They share 25 friends. How many people are on the combined list?
John has 75*3=<<75*3=225>>225 people on his friends list So that means there are 225+75=<<225+75=300>>300 people on the list So once you remove duplicates there are 300-25=<<300-25=275>>275 people #### 275
Jim decides to open up a bike shop. The most common repair he does is fixing bike tires. He charges $20 for this and it cost him $5 in parts. In one month Jim does 300 of these repairs. He also does 2 more complex repairs for $300 each and cost $50 in parts. He also sells $2000 profit worth of things from his retail shop. If rent and other fixed expense for the shop is $4000 a month how much profit did the shop make?
From each tire repair, he made 20-5=$<<20-5=15>>15 profit So repairs made him a profit of 15*300=$<<15*300=4500>>4500 The two complex repairs each made him 300-50=$<<300-50=250>>250 profit So those added 250*2=$<<250*2=500>>500 So his total profit from everything was 4500+500+2000=$<<4500+500+2000=7000>>7000 So he made a profit of 7000-4000=$<<7000-4000=3000>>3000 #### 3000
Mary went to the store to buy fruit. Apples cost $1, oranges cost $2, and bananas cost $3. For every 5 fruits that customers buy, the store offers a $1 discount. Mary buys 5 apples, 3 oranges, and 2 bananas. How much will she pay?
For 5 apples, Mary will pay 5*1= <<5*1=5>>5 dollars. For 3 oranges, she will pay 3*2= <<3*2=6>>6 dollars. For 2 bananas, she will pay 2*3 = <<2*3=6>>6 dollars. She bought 5+3+2=<<5+3+2=10>>10 fruits For 10 fruits, Mary gets a discount of 10/5 = <<10/5=2>>2 dollars. In total, the bill is 5 + 6 + 6 = <<5+6+6=17>>17 dollars. Subtracting the discount offered by the stores, Mary will pay 17 - 2 = <<17-2=15>>15 dollars. #### 15
Roy owns a refrigerated warehouse where he stores produce before selling it at the farmer’s market. The fruits and vegetables he stores are very sensitive to temperature, and he must keep them all cold or they will spoil. One day, the power went out and the air conditioner was turned off for three hours, during which time the temperature rose by 8 degrees per hour. If Roy gets the power back on, it will activate the air conditioner to lower the temperature at the rate of 4 degrees F per hour. What is the amount of time, in hours, it will take for the air conditioner to restore the warehouse to 43 degrees F?
At a rate of 8 degrees per hour, in three hours the temperature rose by 3*8=<<3*8=24>>24 degrees. At a rate of 4 degrees per hour, the air conditioner can reduce the temperature 24 degrees in 24/4=6 hours. #### 6
Janet, a third grade teacher, is picking up the sack lunch order from a local deli for the field trip she is taking her class on. There are 35 children in her class, 5 volunteer chaperones, and herself. She she also ordered three additional sack lunches, just in case there was a problem. Each sack lunch costs $7. How much do all the lunches cost in total?
Janet needs 35 lunches for the kids + 5 for the chaperones + 1 for herself + 3 extras = <<35+5+1+3=44>>44 lunches. Each lunch is $7, so lunch for the field trip costs $7 per lunch * 44 lunches = $<<7*44=308>>308 total #### 308