[Question]Jack has a stack of books that is 12 inches thick. He knows from experience that 80 pages is one inch thick. If he has 6 books, how many pages is each one on average?
[Answer]There are 960 pages because 80 x 12 = 960. Each book is 160 pages because 960 / 6 = 160. The answer is 160.
Q: Tim drops a ball off the roof of a 96-foot tall building. The ball bounces to half the height from which it fell on each bounce. How high will it bounce on the fifth bounce?
A: On the first bounce, it will reach a height of 96 / 2 = 48 feet. On the second bounce, it will reach a height of 48 / 2 = 24 feet. On the third bounce, it will reach a height of 24 / 2 = 12 feet. On the fourth bounce, it will reach a height of 12 / 2 = 6 feet. On the fifth bounce, it will reach a height of 6 / 2 = 3 feet. The answer is 3.
Question: There are two warehouses. The first warehouse has twice as many boxes as the second warehouse. If the first warehouse has 400 boxes, how many boxes are there in both warehouses combined?
Answer: The second warehouse has 400 / 2 = 200 boxes. Collectively, there are 400 + 200 = 600 boxes in the first and second warehouse. The answer is 600.
[Question]In a house, there are 16 cats. Two of them are white, and 25% of them are black. The rest of the cats are grey. How many grey cats are in this house?
[Answer]In this house, there are 16 * 25 / 100 = 4 black cats. If there are two white cats, that means that there are 16 - 4 - 2 = 10 grey cats in this house. The answer is 10.
Q: Clara brings a package of 100 stickers to school. She gives 10 stickers to a boy she likes. She gives half of the stickers which she has left to her best friends. How many stickers does Clara have left?
A: She gives the boy she likes 10 stickers. After giving the boy his stickers, she has 100 10 = 90 stickers left. She gives her best friends 90 / 2 = 45 stickers. This leaves Clara with 90 45 stickers = 45 stickers. The answer is 45.
Question: There were 50 racers in a bicycle charity race at the beginning of the race. After 20 minutes, 30 more racers joined the race. The total number of racers doubled after another 30 minutes. If at the end of the race only 130 people finished the race, what's the total number of people who dropped before finishing the race?
Answer:
At the start, there were 50 racers, who were joined by 30 more racers, thus 50 + 30 = 80 racers. After 30 more minutes, the number of racers doubled, totaling 80 * 2 = 160 racers. If the number of racers who finished is 130, the 160 - 130 = 30 racers dropped before finishing. The answer is 30.