loafeihong/math_mmlu_format huggingface dataset:
Two pipes can separately fill a tank in 20 and 30 hours respectively. Both the pipes are opened to fill the tank but when the tank is full, a leak develops in the tank through which one-third of water supplied by both the pipes goes out. What is the total time taken to fill the tank? Answer Choice: (A) 17 hrs (B) 16 hrs (C) 15 hrs (D) 13 hrs (E) 12 hrs
Answer: B
Three persons A, B and C started new business. A & C invested amounts in the ratio 2:1, whereas the ratio between amounts invested by A & B was 3:2, If Rs 157300 was their profit, how much amount did B receive? Answer Choice: (A) 35009 (B) 37900 (C) 39000 (D) 48400 (E) 52000
Answer: D
If a,b, and c are consecutive positive integers and a>b>c, what can be the value of (a^2-b^2)(b^2-c^2)? Answer Choice: (A) 77 (B) 88 (C) 99 (D) 110 (E) 121
Answer: C
Two trains are moving at 80 kmph and 70 kmph in opposite directions. Their lengths are 150 m and 100 m respectively. The time they will take to pass each other completely is? Answer Choice: (A) 6 sec (B) 7 sec (C) 7 2/2 sec (D) 8 sec (E) 9 sec
Answer: A
The average of 13 numbers is 10.9. If the average of the first seven numbers is 10.5 and that of the last seven numbers is 11.4, then the middle number is Answer Choice: (A) 15.6 (B) 11.6 (C) 12.6 (D) 13.3 (E) 14.4
Answer: B
The maximum number of student amoung them 1001 pens and 910 pencils can be distributed in such a way that each student gets the same number of pens and same number of pencils is : Answer Choice: (A) 91 (B) 910 (C) 1001 (D) 1911 (E) None of these
Answer: A
An article is bought for Rs.675 and sold for Rs.900, find the gain percent? Answer Choice: (A) 33 1/2% (B) 33 2/3% (C) 33 1/3% (D) 33 3/3% (E) 32 1/3%
Answer: C
A pump can fill a tank with water in 2 hours. Because of a leak, it took 2x1/3 hours to fill the tank. The leak can drain all the water of the tank in Answer Choice: (A) 5 hours (B) 7 hours (C) 8 hours (D) 14 hours (E) 18 hours
Answer: D
A parking garage rents parking spaces for $10 per week or $20 per month. How much does a person save in a year by renting by the month rather than by the week? Answer Choice: (A)  $140 (B)  $160 (C)  $220 (D)  $240 (E)  $280
Answer: E
How many words can be formed by using all letters of the word “BIHAR” Answer Choice: (A) 478 (B) 451 (C) 120 (D) 123 (E) 150
Answer: C
In a certain pond, 40 fish were caught, tagged, and returned to the pond. A few days later, 40 fish were caught again, of which 2 were found to have been tagged. If the percent of tagged fish in the second catch approximates the percent of tagged fish in the pond, what is the approximate number of fish in the pond? Answer Choice: (A)  1000 (B)  625 (C)  1,250 (D)  2,500 (E)  10,000
Answer: A
The ratio of two quantities is 1 to 2. If each of the quantities is increased by 15, what is the ratio of these 2 new quantities? Answer Choice: (A) 5:6 (B) 25:27 (C) 15:16 (D) 20:21 (E) It cannot be determined from the information given
Answer: E
Line k is in the rectangular coordinate system. If the a-intercept of k is -2, and the y-intercept is 3, which of the following is an equation of line k? Answer Choice: (A) -3a + 2y = 6 (B) 3a + 2y = -6 (C) 3a - 2y = 6 (D) 2a - 3y = 6 (E) -2a - 3y = 6
Answer: A
In 1979 approximately 1/3 of the 37.3 million airline passengers traveling to or from the United States used Kennedy Airport. If the number of such passengers that used Miami Airport was 1/3 the number that used Kennedy Airport and 4 times the number that used Logan Airport, approximately how many millions of these passengers used Logan Airport that year? Answer Choice: (A)  18.6 (B)  9.3 (C)  6.2 (D)  3.1 (E)  1.01
Answer: E
At a certain fruit stand, the price of each apple is 50 cents and the price of each orange is 60 cents. Mary selects a total of 10 apples and oranges from the fruit stand, and the average (arithmetic mean) price of the 10 pieces of fruit is 56 cents. How many oranges must Mary put back so that the average price of the pieces of fruit that she keeps is 52 cents? Answer Choice: (A) 1 (B) 2 (C) 3 (D) 4 (E) 5
Answer: E
A 300 m long train crosses a platform in 39 sec while it crosses a signal pole in 26 sec. What is the length of the platform? Answer Choice: (A) 389 m (B) 150 m (C) 289 m (D) 299 m (E) 219 m
Answer: B
A is twice as good a workman as B. Together they finish a piece of work in 18 days. Then B can do a similar work by himself in : Answer Choice: (A) 54 days (B) 27 days (C) 29 days (D) 17 days (E) 37 days
Answer: A
The sum of the ages of 4 children born at the intervals of 4 years each is 48 years. What is the age of the youngest child? Answer Choice: (A) 2 years (B) 4 years (C) 6 years (D) 8 years (E) 10 years
Answer: C
The product of the prime integers between 23 and 35, inclusive, is: Answer Choice: (A) 50! – 40! (B) 99,029 (C) 2,303 (D) 22,011 (E) 2,000
Answer: D
A flagpole 18 meters high casts a shadow of length 45 meters. If a building under similar conditions casts a shadow of length 65 meters, what is the height of the building (in meters)? Answer Choice: (A) 22 (B) 24 (C) 26 (D) 28 (E) 30
Answer: C
If the L.C.M of two numbers is 600 and their product is 18000, find the H.C.F of the numbers. Answer Choice: (A) 50 (B) 30 (C) 125 (D) 25 (E) None of these
Answer: B
What will come in place of the x in the following Number series? 46080, 3840, 384, 48, 8, x Answer Choice: (A) 2 (B) 3 (C) 4 (D) 5 (E) 6
Answer: A
There are 4 different letters and 4 addressed envelopes.In how many ways can the letters be put in the envelopes so that atleast one letter goes to the correct address ? Answer Choice: (A) 349 (B) 77 (C) 2087 (D) 27066 (E) 2811
Answer: B
A certain number of workers can do a work in 75 days. If there were 10 workers more it could be finished in 10 days less. How many workers are there? Answer Choice: (A) 65 (B) 30 (C) 28 (D) 24 (E) 32
Answer: A
If a fair 6-sided die is rolled three times, what is the probability that exactly one 5 is rolled? Answer Choice: (A) 25/216 (B) 50/216 (C) 25/72 (D) 25/36 (E) 5/6
Answer: C
An empty container is filled with pure alcohol. The alcohol is slowly allowed to run out and when the container is 1/4 empty ,it is replaced with water . Next, when the container is half empty it is again filled with water. Finally, when it is empty, it is again filled with water. What percentage of container is alcohol now? Answer Choice: (A) 81/2% (B) 113/4% (C) 93/8 % (D) 143/8% (E) none of these
Answer: C
A train passes a man standing on the platform. If the train is 170 meters long and its speed is 72 kmph, how much time it took in doing so? Answer Choice: (A) 7 1/2 (B) 5 1/2 (C) 2 1/2 (D) 8 1/2 (E) 8 2/2
Answer: D
In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for regular work and Rs. 3.20 per hours for overtime. If he earns Rs. 432 in 4 weeks, then how many hours does he work for ? Answer Choice: (A) 160 (B) 175 (C) 190 (D) 200 (E) 210
Answer: B
What is the probability of getting a number less than 4 when a die is rolled? Answer Choice: (A) 8/7 (B) 4/5 (C) 6/7 (D) 2/4 (E) 1/2
Answer: E
A circular rim A having a diameter of 54 inches is rotating at the rate of x inches/min. Another circular rim B with a diameter of 27 inches is rotating at the rate of y inches/min. What is the value of y in terms of x, if both the rims reach their starting positions at the same time after every rotation. Answer Choice: (A) 2x (B) 3x (C) 4x (D) 5x (E) 6x
Answer: A
A jogger running at 9 km/hr along side a railway track is 240 m ahead of the engine of a 130 m long train running at 45 km/hr in the same direction. In how much time will the train pass the jogger? Answer Choice: (A) 28 sec (B) 16 sec (C) 37 sec (D) 18 sec (E) 17 sec
Answer: C
The average of first eight prime numbers which are odd is? Answer Choice: (A) 12.25 (B) 15.7 (C) 15.2 (D) 15.8 (E) 15.1
Answer: A
(856942 x 555) = ? Answer Choice: (A) 484638125 (B) 474638130 (C) 474638135 (D) 475602810 (E) 484638145
Answer: D
There were 35 students in a hostel. Due to the admission of 7 new students, the expenses of mess were increased by 42 per day while the average expenditure per head diminished by 1. What was the original expenditure of the mess? Answer Choice: (A) 400 (B) 400 (C) 445 (D) 465 (E) None of the above
Answer: B
The ratio 6 : 3 expressed as a percent equals Answer Choice: (A) 12.5% (B) 40% (C) 80% (D) 200% (E) None
Answer: D
In an election only two candidates contested. A candidate secured 70% of the valid votes and won by a majority of 192 votes. Find the total number of valid votes? Answer Choice: (A) 430 (B) 438 (C) 436 (D) 480 (E) 422
Answer: D
Two trains run in opposite directions on a circular track. Train A travels at a rate of 4π miles per hour and Train B runs at a rate of 6π miles per hour. If the track has a radius of 6 miles and the trains both start from Point E at the same time, how long, in hours, after the trains depart will they again meet at Point E? Answer Choice: (A) 3 (B) 6 (C) 9 (D) 18 (E) 22
Answer: B
The distance from City A to City B is 120 miles. While driving from City A to City B, Cara drives at a constant speed of 30 miles per hour. Dan leaves City A 90 minutes after Cara. What is the minimum constant speed in miles per hour that Dan must exceed in order to arrive in City B before Cara? Answer Choice: (A) 42 (B) 44 (C) 46 (D) 48 (E) 50
Answer: D
At a certain fruit stand, the price of each apple is 40 cents and the price of each orange is 60 cents. Mary selects a total of 30 apples and oranges from the fruit stand, and the average (arithmetic mean) price of the 30 pieces of fruit is 56 cents. How many oranges must Mary put back so that the average price of the pieces of fruit that she keeps is 52 cents? Answer Choice: (A) 10 (B) 11 (C) 13 (D) 14 (E) 15
Answer: E
19/6 = 4/27 . which method did you use to determine whether this proportion is true or false? Answer Choice: (A) true (B) neutral (C) false (D) not sure (E) none
Answer: C
The water level in a rectangular swimming pool measuring 40 feet by 25 feet is to be lowered by 6 inches. How many gallons of water must be removed? (1 cu ft = 7.5 gallons) Answer Choice: (A) 100 (B) 250 (C) 750 (D) 3750 (E) 5625
Answer: D
Two pipes X and Y can separately fill a cistern in 18 and 24 hours respectively. If they are turned on alternately for one hour each, how long will it take to fill the cistern? Answer Choice: (A) 20 1/2 hours (B) 20 1/6 hours (C) 20 3/2 hours (D) 23 1/2 hours (E) 21 1/2 hours
Answer: A
The ages of two persons differ by 20 years. If 5 years ago, the elder one be 5 times as old as the younger one, their present ages (in years) are respectively Answer Choice: (A) 18 years (B) 88 years (C) 77 years (D) 10 years (E) 17 years
Answer: D
If Teena is driving at 55 miles per hour and is currently 7.5 miles behind Joe, who is driving at 40 miles per hour in the same direction then in how many minutes will Teena be 22.5 miles ahead of Joe? Answer Choice: (A) 15 (B) 60 (C) 75 (D) 90 (E) 120
Answer: E
A team of eight entered for a shooting competition. The best marks man scored 82 points. If he had scored 92 points, the average scores for. The team would have been 84. How many points altogether did the team score? Answer Choice: (A) 662 (B) 672 (C) 652 (D) 642 (E) 721
Answer: A
Alice took out a charge account at the General Store and agreed to pay 3% simple annual interest. If she charges $40 on her account in January, how much will she owe a year later, assuming she does not make any additional charges or payments? Answer Choice: (A) $41.20 (B) $41.60 (C) $42.00 (D) $42.40 (E) $42.80
Answer: A
In an election between two candidates, 10% of votes are were declares invalid. First candidate got 10800 votes which were 60% of the total valid votes . The total number of votes enrolled in that election was: Answer Choice: (A) 9000 (B) 98000 (C) 60000 (D) 11000 (E) 12000
Answer: C
Tough and Tricky questions: Work/Rate Problems.
A group of 4 junior lawyers require 2 hours to complete a legal research assignment. How many hours would it take a group of three legal assistants to complete the same research assignment assuming that a legal assistant works at two-thirds the rate of a junior lawyer?
Source: Chili Hot GMAT Answer Choice: (A) 13 (B) 10 (C) 9 (D) 6 (E) 4
Answer: E
A train running at the speed of 30 km/hr crosses a pole in 9 sec. What is the length of the train? Answer Choice: (A) 75 m (B) 180 m (C) 324 m (D) Cannot be determined (E) None of these
Answer: A
In a certain pond, 30 fish were caught, tagged, and returned to the pond. A few days later, 50 fish were caught again, of which 2 were found to have been tagged. If the percent of tagged fish in the second catch approximates the percent of tagged fish in the pond, what is the approximate number of fish in the pond? Answer Choice: (A) 750 (B) 625 (C) 1,250 (D) 2,500 (E) 10,000
Answer: A
John throws a coin until a series of four consecutive heads or three consecutive tails appears. What is the probability that the game will end after the fifth throw? Answer Choice: (A) 1/16 (B) 2/16 (C) 3/16 (D) 7/16 (E) 9/16
Answer: A
A certain stock exchange designates each stock with a 1, 2 or 3 letter code, where each letter is selected from the 6 letters of the alphabet. If the letters may be repeated and if the same letters used in a different order, constitute a different code, how many diff stocks is it possible to designate with these codes? Answer Choice: (A) 258 (B) 426 (C) 324 (D) 542 (E) 410
Answer: A
In a Don Bosco college students, 80 percent are third year students and 90 percent are not second-year students. What fraction of those students who are not third-year students are second-year students? Answer Choice: (A)  3/4 (B)  2/3 (C)  4/7 (D)  1/2 (E)  3/7
Answer: D
Lagaan is levied on the 60 percent of the cultivated land. The revenue department collected total Rs. 3,64,000 through the lagaan from the village of Mutter. Mutter, a very rich farmer , paid only Rs.480 as lagaan. The percentage of total land of Mutter over the total taxable land of the village is: Answer Choice: (A) 0.20833 (B) 0.14544 (C) 0.21978 (D) 0.35466 (E) 0.63435
Answer: C
Raman mixed 24 kg of butter at Rs. 150 per kg with 36 kg butter at the rate of Rs. 125 per kg. At what price per kg should he sell the mixture to make a profit of 40% in the transaction? Answer Choice: (A) Rs. 135 (B) Rs. 162 (C) Rs. 189 (D) Rs. 198 (E) None of these
Answer: C
What is the color code for a 220 omega.gif 5% resistor? Answer Choice: (A) Red, Red, Brown, Gold (B) Red, Red, Brown,Pink (C) Red, Red, Brown, Black (D) Red, Red, Brown, BROUNE (E) Red, Red, Brown, ASHE
Answer: B
52 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780. The bigger part is : Answer Choice: (A) 30.33 (B) 34.44 (C) 26.1 (D) 28.0 (E) 21.0
Answer: A
A man whose speed is 8 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 3 kmph, find his average speed for the total journey ? Answer Choice: (A) 1 kmph (B) 5 kmph (C) 6 kmph (D) 4 kmph (E) 6.8 kmph
Answer: E
How many kg of pure salt must be added to 100kg of 10% solution of salt and water to increase it to a 25% solution? Answer Choice: (A) A)6.7 (B) B)1.3 (C) C)9.6 (D) D)20 (E) E)7.9
Answer: D
In the equation A + B + C + D + E = FG where FG is the two digit number whose value is 10F + G and letters A, B , C , D , E, F and G each represent different digits. If FG is as large as possible. What is the value of G? Answer Choice: (A) 9 (B) 2 (C) 3 (D) 45 (E) 6
Answer: B
Ayesha's father was 38 years of age when she was born while her mother was 36 years old when her brother four years younger to her was born. What is the difference between the ages of her parents? Answer Choice: (A) 6 (B) 4 (C) 5 (D) 1 (E) 2
Answer: C
A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is? Answer Choice: (A) 5 (B) 7 (C) 4 (D) 2 (E) 1
Answer: A
An amount of money is to be distributed among Faruk, Vasim and Ranjith in the ratio 3 : 3 : 7. If Vasims share is Rs. 1500, what is the difference between Faruk's and Ranjith's shares? Answer Choice: (A) s 1200 (B) s 1500 (C) s 1600 (D) s 2000 (E) s 1700
Answer: D
A train 110m long is running at 50kmph. In how much time will it pass a platform 210m long? Answer Choice: (A) 14.15 seconds (B) 15.24 seconds (C) 16.28 seconds (D) 13.30 seconds (E) 10.24 seconds
Answer: E
A man sitting in a train which is traveling at 80 kmph observes that a goods train, traveling in opposite direction, takes 9 seconds to pass him. If the goods train is 280 m long, find its speed.? Answer Choice: (A) 32 kmph (B) 58 kmph (C) 62 kmph (D) 65 kmph (E) 75 kmph
Answer: A
A certain bus driver is paid a regular rate of $16 per hour for any number of hours that does not exceed 40 hours per week. For any overtime hours worked in excess of 40 hours per week, the bus driver is paid a rate that is 75% higher than his regular rate. If last week the bus driver earned $976 in total compensation, how many total hours did he work that week? Answer Choice: (A) 51 (B) 52 (C) 59 (D) 55 (E) 56
Answer: B
Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next? Answer Choice: (A) 12 (B) 14 (C) 27 (D) 53 (E) None of these
Answer: B
A train running at the speed of 60 km/hr crosses a pole in 9 sec. What is the length of the train? Answer Choice: (A) 288 (B) 279 (C) 277 (D) 272 (E) 150
Answer: E
In 2008, a certain factory produced 40% more widgets than it did in 2007, and its production in 2009 was 130% of its production in 2008. By approximately what percent would its production need to decrease the following year for the factory to produce the same number of widgets it did in 2007? Answer Choice: (A) 33.9% (B) 36.7% (C) 39.5% (D) 42.3% (E) 45.1%
Answer: E
If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is Answer Choice: (A) 4/17 (B) 4/16 (C) 4/15 (D) 4/13 (E) 4/12
Answer: D
A student multiplied a number by 3/5 instead of 5/3. What is the percentage error. Answer Choice: (A) 64% (B) 65% (C) 66% (D) 67% (E) None of these
Answer: A
Bert and Rebecca were looking at the price of a condominium. The price of the condominium was 40% more than Bert had in savings, and separately, the same price was also 75% more than Rebecca had in savings. What is the ratio of what Bert has in savings to what Rebecca has in savings. Answer Choice: (A) 1:4 (B) 4:1 (C) 2:3 (D) 3:2 (E) 5:4
Answer: E
If population of certain city increases at the rate of 3%. If population in 1981 was 138915, then population in 1980 was? Answer Choice: (A) 134869 (B) 130000 (C) 261000 (D) 627000 (E) 12690
Answer: A
The distance between West-Town to East-Town is 15 kilometers. Two birds start flying simultaneously towards one another, the first leaving from West-Town at a speed of 4 kilometers per minute and the second bird, leaving from East-Town, at a speed of 1 kilometers per minute. What will be the distance, in kilometers, between the meeting point and West-Town? Answer Choice: (A) 3. (B) 7. (C) 10. (D) 12 (E) 15.
Answer: D
A dealer purchased an article at 3/4 of its list price and sold 50% more than the list price. Find his gain percent? Answer Choice: (A) 2288 (B) 2772 (C) 100 (D) 2771 (E) 2981
Answer: C
What number comes next in this Number series.
7 8 5 5 3 4 4 ?
*Hint: check calende Answer Choice: (A) 6 (B) 3 (C) 6 (D) 1 (E) 8
Answer: A
Find the middle one when The sum of three consecutive even numbers is 57? Answer Choice: (A) 10 (B) 12 (C) 19 (D) 15 (E) 16
Answer: C
The actual area of a rectangle is 60 Cm2, but while measuring its length a student decreases it by 20% and the breadth increases by 25%. The percentage error in area, calculated by the student is : Answer Choice: (A) 5% (B) 15% (C) 20% (D) No change (E) None of these
Answer: D
Three partners A,B,C starts a business. Twice A's capital is equal to thrice B's capital and B's capital is four times C's capital. Out of a total profit of Rs.13000 at the end of the year, B's share is Answer Choice: (A) Rs.4000 (B) Rs.4680 (C) Rs.7500 (D) Rs.6600 (E) None
Answer: B
The hour hand of a watch rotates 30 degrees every hour. How many complete rotations does the hour hand make in 6 days? Answer Choice: (A) 8 (B) 10 (C) 12 (D) 14 (E) 16
Answer: C
A reduction of 30% in the price of oil enables a house wife to obtain 6kgs more for Rs.940, what is the reduced price for kg? Answer Choice: (A) 72 (B) 47 (C) 40 (D) 28 (E) 20
Answer: B
A gets 3 times as much money as B gets, B gets only Rs.25 more then what C gets. The three gets Rs.675 in all. Find the share of B? Answer Choice: (A) 287 (B) 219 (C) 168 (D) 140 (E) 779
Answer: D
In a 1000 m race, A beats B by 200 meters or 25 seconds. Find the speed of B? Answer Choice: (A) 5 m/s (B) 8 m/s (C) 9 m/s (D) 4 m/s (E) 2 m/s
Answer: B
A copy machine, working at a constant rate, makes 35 copies per minute. A second copy machine, working at a constant rate, makes 65 copies per minute. Working together at their respective rates, how many copies do the two machines make in half an hour ? Answer Choice: (A) 3,000 (B) 2,700 (C) 4,500 (D) 5,400 (E) 324,000
Answer: A
A project manager needs to select a group of 3people from a total of 3 men and 3 women. How many possible group combinations exist such that no group has all women? Answer Choice: (A) 72 (B) 19 (C) 74 (D) 82 (E) 48
Answer: B
In how many ways can Ram choose a vowel and a constant from the letters of the word ALLAHABAD? Answer Choice: (A) 4 (B) 6 (C) 9 (D) 5 (E) 7
Answer: A
40% of a number is more than 20% of 650 by 190. Find the number? Answer Choice: (A) 227 (B) 266 (C) 800 (D) 277 (E) 261
Answer: C
A train with a length of 100 meters, is traveling at a speed of 72 km/hr. The train enters a tunnel 2.9 km long. How many minutes does it take the train to pass through the tunnel from the moment the front enters to the moment the rear emerges? Answer Choice: (A) 1.6 (B) 1.9 (C) 2.2 (D) 2.5 (E) 2.8
Answer: D
Distance between A and B is 48 miles. Two men started walking from A and B at the same time towards each other. The person who started from A traveled uniformly with average speed 3 mph. While walking, the other man travels uniformly at 4 mph, but takes a 30-minute rest every other hour. When will they meet each other? Answer Choice: (A)  18 miles away from A (B)  18 miles away from B (C)  after 6 hours from start (D)  after 8 hours from start (E)  after 12 hours from start
Answer: D
Walking with 4/5 of my usual speed, I miss the bus by 5 minutes. What is my usual time? Answer Choice: (A) 145 (B) 5617 (C) 15 (D) 20 (E) 12
Answer: D
Six years ago Anita was P times as old as Ben was. If Anita is now 17 years old, how old is Ben now in terms of P ? Answer Choice: (A) 11/P + 6 (B) P/11 +6 (C) 17 - P/6 (D) 17/P (E) None of these
Answer: A
An article is bought for Rs.675 and sold for Rs.675, find the gain percent? Answer Choice: (A) 33 1/9% (B) 33 8/3% (C) 100% (D) 33 2/3% (E) 33 1/2%
Answer: C
What will come in place of (a) in the following expression?
a - 796.21 + 498.05 = 215.50 – 225.01 Answer Choice: (A) 884.65 (B) 88.6 (C) 488.65 (D) 483.65 (E) 88.61
Answer: C
A man rows his boat 95 km downstream and 45 km upstream, taking 2 1/2 hours each time. Find the speed of the stream? Answer Choice: (A) 5 kmph (B) 7 kmph (C) 9 kmph (D) 8 kmph (E) 10 kmph
Answer: E
An alloy weighing 20 ounces is 70 percent gold. How many ounces of pure gold must be added to create an alloy that is 70 percent gold? Answer Choice: (A) 6 (B) 9 (C) 12 (D) 24 (E) 48
Answer: B
Riley had 21 green marbles. Then she bought 5 bags of blue marbles. There were 9 marbles in each bag. How many marbles does Riley have now? Answer Choice: (A) 23 (B) 49 (C) 60 (D) 41 (E) 66
Answer: E
In a certain state, gasoline stations compute the price per gallon p, in dollars, charged at the pump by adding a 2 percent sales tax to the dealer's price per gallon d, in dollars, and then adding a gasoline tax of $0.18 per gallon. Which of the following gives the dealer's price per gallon d in terms of the price per gallon p charged at the pump? Answer Choice: (A) d = (p-0.02)/1.18 (B) d = p/1.20 (C) d = p/1.02 - 0.18 (D) d= (p-0.18)/1.02 (E) d = p-0.20
Answer: D
Given 2x + y + z = 3 and 5x + 3y + z = 10, what is the value of x + y - z? Answer Choice: (A) 3 (B) 4 (C) 5 (D) 6 (E) 7
Answer: B