Reasoning and answer: Vincent earns $4 x 5 = $20 for selling 5 fantasy books per day. The price of the literature book is $4 / 2 = $2 each. He earns $2 x 8 = $16 per day for selling 8 literature books. So the total money he earns per day is $16 + $20 = $36. Therefore, he will earn $36 x 5 = $180 after 5 days.
The answer: 180
What was the question?
Question: Vincent's bookstore is divided into different kinds of books. His top-selling books are fantasy books. He also sells literature books which cost half of the price of a fantasy book. If his fantasy books cost $4 each, and he sold five fantasy books and eight literature books per day, how much money will he earn after five days?


Joan is given 1 x 60 = 60 minutes to answer the English exam. So Joan will spend 60 / 30 = 2 minutes for each English question. She is given 1.5 x 60 = 90 minutes to answer the Math exam. So, she will spend 90 / 15 = 6 minutes for each Math question. Hence, Joan has 6 - 2 = 4 minutes more for answering each question in Math than in English.
The answer: 4
Reverse engineering the question: Joan is answering English and Math exams with 30 and 15 questions, respectively. The English exam is to be completed in 1 hour and the Math exam in 1.5 hours. If Joan wants to spend an equal amount of time on each question, how many more minutes does she have in answering each question on the Math exam than the English exam?


Reasoning and answer: Let X be the price of the pants. The price of the shirt is 3 / 4 * X. The price of the shoes is X + 10. The total amount paid is X + 3 / 4 * X + X + 10 = $340. Combining like terms we get X * 11 / 4 + 10 = $340. Subtracting 10 from both sides we get X * 11 / 4 = $330. Dividing both sides by 11 / 4 we get X = $120.
The answer: 120
What was the question?
Question: Mark bought a shirt, pants, and shoes for $340. What is the price of the pants knowing that the price of a shirt is three-quarters of the price of the pants and that the price of a shoe is ten dollars more than the price of the pants?


On Friday Walmart sold 2 * 210 pounds = 420 pounds. For all three days Walmart sold 210 + 420 + 150 pounds = 780 pounds. The average amount of beef sold per day is 780 pounds / 3 days = 260 pounds.
The answer: 260
Reverse engineering the question: On Thursday Walmart sold 210 pounds of ground beef. On Friday they sold twice that amount. On Saturday they only sold 150 pounds. What was the average amount of beef sold per day?


Reasoning and answer: Cindy has 400 x 2 = 800 cards. Nicole and Cindy have 400 + 800 = 1200 cards. Rex has 1200 / 2 = 600 cards. Rex is left with 600 / (3 + 1 = 4) = 150 cards.
The answer: 150
What was the question?
Question: Nicole collected 400 Pokemon cards. Cindy collected twice as many, and Rex collected half of Nicole and Cindy's combined total. If Rex divided his card equally among himself and his three younger siblings, how many cards does Rex have left?


Reasoning and answer: The samosas cost 3 * 2 = 6 dollars each. The pakoras cost 4 * 3 = 12 dollars each. The food came to 6 + 12 + 2 = 20 dollars. The tip was an additional 20 * .25 = 5 dollars. The total is 20 + 5 = 25.
The answer: 25
What was the question?
Question:
At the Delicious Delhi restaurant, Hilary bought three samosas at $2 each and four orders of pakoras, at $3 each, and a mango lassi, for $2. She left a 25% tip. How much did the meal cost Hilary, with tax, in dollars?