2 hamburgers cost 2 * 5 = $10. 3 bottles of cola cost 3 * 2 = $6. The total price without discount is 10 + 6 = $16. With the discount coupon, it's 16 - 4 = $12.
The answer: 12
Reverse engineering the question: Wilson goes to a fast-food restaurant. He buys 2 hamburgers for $5 each and 3 bottles of cola for $2 each. Wilson uses his $4 discount coupon. How much money does he pay in total?


Reasoning and answer: One lesson lasts 1.5 hours, so 18 hours of them is 18 / 1.5 = 12 lessons. If one lesson costs $30, then 12 lessons cost 12 * 30 = $360.
The answer: 360
What was the question?
Question: Micheal decided to take some piano lessons. One lesson costs $30 and lasts for 1.5 hours. How much will Micheal need to pay for 18 hours of lessons?


Let X be the distance Sam ran. His walk through the store was twice the distance of his run, so his walk was 2X. He biked for 12 miles and went 18 miles in all, so he walked and ran 18 - 12 = 6 miles. Thus, his walk and run together were X + 2X = 3X = 6 miles. Thus, he ran X = 6 / 3 = 2 miles.
The answer: 2
Reverse engineering the question: Sam went for a run in the morning. In the afternoon, he went grocery shopping and walked twice the distance through the store as he had run that morning. That evening, he went on a bike ride with his family and biked for 12 miles. In all, he went 18 miles that day. How many miles was Sam’s morning run?


Reasoning and answer: At first at 50 miles / hour he travels 50 miles / hours * 3 hours = 150 miles. After that, he speeds up, traveling 80 miles / hours * 4 hours = 320 miles. He travels a total of 150 miles + 320 miles = 470 miles. He is 600–470 = 130miles from the hotel.
The answer: 130
What was the question?
Question: Samuel is driving to San Francisco’s Comic-Con in his car and he needs to travel 600 miles to the hotel where he made a reservation. At first, he drives at 50 miles/hour for 3 hours straight, then he speeds up to 80 miles/hour for 4 hours. How far is he from the hotel?


He needs 150 - 38 = 112 liters more to have a full tank of gas. Donny will pay 112 x $3 = $336 for a full tank of gas. His will get $350 - $336 = $14 change.".
The answer: 14
Reverse engineering the question: Donny went to the gas station to gas up his tank. He knows his truck holds 150 liters of fuel. His truck already contained 38 liters. How much change will he get from $350 if each liter of fuel costs $3?


2 / 5 of the total amount of sales Mr. Brandon made yesterday, which were credit purchases, were worth 2 / 5 * $80 = $32. The cash sales that Mr. Brandon made yesterday was $80 - $32 = $48.
The answer: 48
Reverse engineering the question:
The buyers who came to Mr. Brandon's shop yesterday bought goods worth $80. If 2/5 of the total amount of sales Mr. Brandon made yesterday were credit sales, and the rest were cash sales, how much did Mr. Brandon get from cash sales?