[Question]A pipe is clogged so that only 2 ounces of cleaner can run through the pipe per minute. After fifteen minutes, the cleaner has unclogged it enough that 3 ounces can run through per minute. Ten minutes later, the clog is cleared enough for 4 ounces to run through per minute. How many ounces of cleaner were used after 30 minutes?
[Answer]For 15 minutes at 2 ounces per minute, 2 * 15 = 30 ounces were used. For the next 10 minutes at 3 ounces per minute, 3 * 10 = 30 ounces were used. There are 30 - 15 - 10 = 5 minutes remaining. For the next 5 minutes at 4 ounces per minute, 4 * 5 = 20 ounces were used. After 30 minutes, 30 + 30 + 20 = 80 ounces of cleaner were used. The answer is 80.
Q: Susan earned $600 from babysitting over the summer. She went shopping and spent half of it on clothes. Then she spent half of what was left on books. How much money did she have left?
A: Susan spent 600 / 2 = 300 on clothes. After buying clothes she had 600 - 300 = 300 dollars left. She spent 300 / 2 = 150 dollars on books. She had 300 - 150 = 150 dollars left. The answer is 150.
Question: Mark spent 220 dollars to fix his car. It needed two parts that cost 20 dollars each, and labor cost .5 dollars a minute. How many hours did the mechanic work?
Answer: Labor cost is .5 * 60 = 30 dollars per hour. The cost for parts is 20 * 2 = $40. The total cost for labor is 220 - 40 = $180. He spent 180 / 30 = 6 hours on labor. The answer is 6.
[Question]Bill is stocking the kitchenware section of the Walmart. He needs to stack 60 pots. On each shelf, he can stack five pots vertically and three sets of vertically stacked pots side-by-side. How many shelves does he need to stock all the pots?
[Answer]First find how many pots fit on one shelf: 5 pots / set * 3 sets = 15 pots. Then divide the number of pots Bill has by the number that fit on each shelf: 60 pots / 15 pots / shelf = 4 shelves. The answer is 4.
Q: Tony read 23 books, Dean read 12 books and Breanna read 17 books. Tony and Dean read 3 of the same books and all three had read the same book as well. In total how many different books have Tony, Dean, and Breanna read?
A: Tony and Dean together read 23 + 12 = 35 books. 3 of these books were duplicates so Tony and Dean together read 35 - 3 = 32 unique books. All three read 32 + 17 = 49 books. Because the books are being counted three times, the book is counted 3 - 1 = 2 extra times. All together they have read 49 - 2 = 47 different books. The answer is 47.
Question: In the school election, Eliot got twice as many votes as Shaun, and Shaun got 5 times as many votes as Randy. If Randy got 16 votes, how many did Eliot get?
Answer:
Shaun got 5 * 16 = 80 votes. Eliot got 80 * 2 = 160 votes. The answer is 160.