Q: John can read a book 60% faster than his brother. If his brother takes 8 hours to read a book, how long would it take John to read 3 books?
A: Reading 60% faster means John's brother takes 1 + .6 = 1.6 times as long as John to read. So John reads a book in 8 / 1.6 = 5 hours. So it would take John 5 * 3 = 15 hours to read 3 books. The answer is 15.
Question: Kevin has a tree growing in his garden that is currently 180 inches tall. That is 50% taller than it was when he planted it there. How tall was the tree, in feet, then?
Answer: Since it is 50% taller, then 180 inches is 100% + 50% = 150% of its height then. So each 1% is equal to 180 / 150 = 1.2 inches. So, its height then was 1.2 x 100% = 120 inches. Since 1 foot is equal to 12 inches, then 120 inches is equal to 120 / 12 = 10 feet. The answer is 10.
[Question]Two-fifths of the seats in an auditorium that holds 500 people are currently taken. It was found that 1/10 of the seats are broken. How many seats are still available?
[Answer]500 / 2 / 5 = 200 seats are already taken. 500 / 1 / 10 = 50 seats are broken. So 200 + 50 = 250 seats are either taken or broken. Therefore, 500 - 250 = 250 seats are still available. The answer is 250.
Q: A bag of caramel cookies has 20 cookies inside and a box of cookies has 4 bags in total. How many calories are inside the box if each cookie is 20 calories?
A: If 1 bag has 20 cookies and a box has 4 bags, then in total there are 20 * 4 = 80 cookies inside the box. If 1 cookie has 20 calories and there are 80 cookies in the box, then the box has in total 20 * 80 = 1600 calories. The answer is 1600.
Question: Tracy set up a booth at an art fair. 20 people came to look at her art. Four of those customers bought two paintings each. The next 12 of those customers bought one painting each. The last 4 customers bought four paintings each. How many paintings did Tracy sell at the art fair?
Answer: The first 4 customers bought 4 * 2 = 8 paintings. The next 12 customers bought 12 * 1 = 12 paintings. The last 4 customers bought 4 * 4 = 16 paintings. In total Tracy sold 8 + 12 + 16 = 36 paintings. The answer is 36.
Q: Lionel walked 4 miles. Esther walked 975 yards and Niklaus walked 1287 feet. How many combined feet did the friends walk?
A:
Lionel = 4 * 5280 = 21120 feet. Esther = 975 * 3 = 2925 feet. Together = 21120 + 2925 + 1287 = 25332 feet. Together the friends walked 25332 feet. The answer is 25332.