He buys 10 / 1.25 = 8 notepads. That means he buys 8 * 60 = 480 pages.
The answer: 480
Reverse engineering the question: Bart buys $10 of notepads for $1.25 each. They have 60 pages each. How many pages did he buy?


Reasoning and answer: 13 weeks have 13 * 7 = 91 days. For 91 days the bus system carries 1,200,000 * 91 = 109,200,000 people.
The answer: 109200000
What was the question?
Question: The city’s bus system carries 1,200,000 people each day. How many people does the bus system carry for 13 weeks?


In one week he will have saved 20 + 10 = 30 dollars. In two weeks he will have saved 30 + 10 = 40 dollars. In three weeks he will have saved 40 + 10 = 50 dollars. At the end of week four, he will have saved 50 + 10 = 60 dollars.
The answer: 60
Reverse engineering the question: Jay has decided to save money from his paycheck every week. He has decided that he will increase the amount he saves each week by 10 dollars. If he started by saving 20 dollars this week, how much will he have saved in a month from now?


Reasoning and answer: If Justin has 14 dogs, Rico, who has 10 more dogs than Justin, has 14 + 10 = 24 dogs. Since Camden just bought 3 / 4 times as many dogs as Rico, he bought 3 / 4 * 24 = 18 dogs. A dog has four legs, so Camden's 18 dogs have 18 * 4 = 72 legs.
The answer: 72
What was the question?
Question: Camden just bought 3/4 times as many dogs as Rico, who has 10 more dogs than Justin. If Justin has 14 dogs, what's the total number of legs that Camden's dogs have?


He has to read 350 pages a week because 7 x 50 = 350. He has read 262 pages because 43 + 65 + 28 + 70 + 56 = 262. He has to read 88 pages on Saturday because 350 - 262 = 88.
The answer: 88
Reverse engineering the question: Berry wants to make sure he reads an average of 50 pages a day. This week he read 43 pages on Sunday, 65 pages on Monday, and 28 pages on Tuesday. He had a soccer game and fell asleep early on Wednesday so he read nothing. On Thursday he read 70 pages, and on Friday he read 56 pages. How many pages does he have to read on Saturday to reach his goal?


Ben collected 36 / 3 = 12 shells. Alan collected 12 * 4 = 48 shells.
The answer: 48
Reverse engineering the question:
On a school trip to the seashore, Alan and his friends collected shells. Alan collected four times as many shells as Ben did. Ben got a late start and only collected a third of what Laurie did. If Laurie collected 36 shells how many did Alan collect?