[Question]Mary needs school supplies. She has 6 classes and needs 1 folder for each class. She also needs 3 pencils for each class. She decides that for every 6 pencils she should have 1 eraser. She also needs a set of paints for an art class. Folders cost $6, pencils cost $2, and erasers cost $1. If she spends $80, how much did the set of paints cost in dollars?
[Answer]Mary needs 6 * 1 = 6 folders. Mary needs 6 * 3 = 18 pencils. Mary needs 18 / 6 = 3 erasers. Mary spends 6 * 6 = $36 on folders. Mary spends 18 * 2 = $36 on pencils. Mary spends 3 * 1 = $3 on erasers. Mary spends 36 + 36 + 3 = $75 on all the supplies except the paints. Mary spends 80 - 75 = $5 on the paint set. The answer is 5.
Q: Nick has 60 cans. Each can takes up 30 square inches of space before being compacted and 20% of that amount after being compacted. How much space do all the cans take up after being compacted?
A: First find the total amount of space the cans take up before being compacted: 60 cans * 30 sq in / can = 1800 sq in. Then multiply that amount by the percentage of space they take up after being compacted: 1800 sq in * 20% = 360 sq in. The answer is 360.
Question: Carla adds a can of chilis, two cans of beans, and 50% more tomatoes than beans to a normal batch of chili. If she makes a quadruple batch, how many cans of food does she need?
Answer: First find the number of cans of tomatoes in a normal batch of chili: 2 cans * 150% = 3 cans. Then add the number of cans of each type of food to find the total number of cans per batch: 3 cans + 2 cans + 1 can = 6 cans. Then multiply the number of cans per batch by the number of batches to find the total number of cans: 6 cans / batch * 4 batches = 24 cans. The answer is 24.
[Question]A baker bakes 5 loaves of bread an hour in one oven. He has 4 ovens. From Monday to Friday, he bakes for 5 hours, but on Saturday and Sunday, he only bakes for 2 hours. How many loaves of bread does the baker bake in 3 weeks?
[Answer]In an hour, the baker bakes 5 x 4 = 20 loaves of bread. From Monday to Friday, he bakes 5 x 20 = 100 loaves of bread per day. From Monday to Friday, he bakes a total of 100 x 5 = 500 loaves of bread. On Saturday and Sunday, he bakes 2 x 20 = 40 loaves of bread per day. On Saturday and Sunday, he bakes a total of 40 x 2 = 80 loaves of bread. In a week, he bakes 500 + 80 = 580 loaves of bread. In 3 weeks, he bakes 580 x 3 = 1740 loaves of bread. The answer is 1740.
Q: Isabella is twice as old as Antonio. In 18 months, she will be 10 years old. How many months old is Antonio?
A: First, we determine that Isabella will be 10 * 12 = 120 months old at age 10, to find a number to compare her age to Antonio's with. Then we subtract the 18 months from the total of 120 months to find 120 - 18 = 102 months, which is the age Isabella is currently. Since at 102 months old Isabella is twice as old as Antonio, we take 102 / 2 = 51 months as Antonio's age. The answer is 51.
Question: Carmela has $7 and each of her four cousins has $2. How much will Carmela have to give to each of her cousins so that she and her cousins will have the same amount of money?
Answer:
Carmela's four cousins have a total of $2 x 4 = $8. The total money they all have is $7 + $8 = $15. There will be 1 (Carmela) + 4 (cousins) = 5 people who will be sharing equally the money. So each of them should get $15 / 5 = $3. Hence, Carmela has to give a total of $7 - $3 = $4 to her 4 cousins. Therefore, each of her cousins will get $4 / 4 = $1. The answer is 1.