Reasoning and answer: Each of their entrees cost $20.00 so they cost 2 * 20 = $40.00. The appetizer was $9.00, the main meal was $40.00 and the dessert was $11.00 for a total of $60.00. The entire meal cost $60.00 and they left a 30% tip which came to 60 * .30 = $18.00. The meal was $60.00 and the tip was $18.00 so the total bill came to 60 + 18 = $78.00.
The answer: 78
What was the question?
Question: Buffy and Oz went to dinner. They shared an appetizer that cost $9.00. Each of their entrees was $20.00 and they shared a dessert that was $11.00. If they left a 30% tip, what was the entire price of the meal?


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: 15
Reverse engineering the question: 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?


Reasoning and answer: One quarter of $4 is (1 / 4) * $4 = $1. $1 is equivalent to 100 cents. 20 cents will buy 1 candy so 100 cents will buy 100 / 20 = 5 candies.
The answer: 5
What was the question?
Question: Jake is from a conservative household so during lunch at school one day, he gave one-quarter of his feeding allowance to a hungry friend. If candies cost 20 cents apiece and Jake's feeding allowance is $4, how many candies can his friend purchase with the money Jake gave to him?


Let X be the number of children in the group. The number of adults in the group is X + 25. The group pays 8 * X + 15 * (X + 25) = $720. Multiplying through the parentheses, we get 8X + 15X + 375 = $720. Combining like terms, we get 23X + 375 = 720. Subtracting 375 from both sides, we get 23X = 720 - 375 = $345. Dividing both sides by 23, we get X = $345 / 23 = 15 children.
The answer: 15
Reverse engineering the question: A group of people pays $720 for admission tickets to an amusement park. The price of an adult ticket is $15, and a child ticket is $8. There are 25 more adults than children. How many children are in the group?


Reasoning and answer: He got 250 * .8 = $200. He gets a 600 * .25 = $150 discount on the second system. So it cost 600 - 150 = $450. So he was 450 - 200 = $250 out of pocket.
The answer: 250
What was the question?
Question: John decides to trade in his stereo system. His old system cost 250 dollars and he got 80% of the value for it. He then buys a system that costs $600 that he gets a 25% discount on. How much money came out of his pocket?


Reasoning and answer: There are 7 people on the bus after the first stop. There are 7 + 5 - 3 = 9 people on the bus after the second stop. There are 9 + 4 - 2 = 11 people on the bus after the third stop. 11 passengers are now on the bus.
The answer: 11
What was the question?
Question:
The bus started its route. At its first stop, 7 people got on. At the second stop, 3 people got off, and 5 people got on. At the third stop, 2 people got off, and 4 people got on. How many passengers are now on the bus?