Tom picked 12 x 2 = 24 apples. Altogether, they picked 12 + 24 = 36 apples.
The answer: 36
Reverse engineering the question: Lexie and Tom went apple picking. Lexie picked 12 apples and Tom picked twice as many apples. How many apples did they collect altogether?


Reasoning and answer: The pie shop has 6 x 10 = 60 slices of custard pie. Therefore, the pie shop will earn $3 x 60 = $180 for the 60 slices of custard pie.
The answer: 180
What was the question?
Question: A pie shop charges $3 per slice of custard pie. They cut each whole pie into 10 slices. If they make 6 whole custard pies, how much money will the pie shop earn?


Let x = the number of guitars Steve has. Barbeck has 2x guitars, and Davey has 3 * 2x = 6x guitars. 2x + 6x + x = 27. 9x = 27. x = 27 / 9 = 3 so Steve has 3 guitars. Barbeck has 2 * 3 = 6 guitars. And Davey has 3 * 6 = 18 guitars.
The answer: 18
Reverse engineering the question: Barbeck has two times as many guitars as Steve, but Davey has three times as many guitars as Barbeck. If there are 27 guitars altogether, how many guitars does Davey have?


Reasoning and answer: Shane gave Mark 14 * 3 = 42 buttons. After that Mark had 42 + 14 = 56 buttons. Then Mark gave 56 / 2 = 28 buttons to Shane. Which left Mark with 28 buttons.
The answer: 28
What was the question?
Question: Mark started the day with 14 buttons. His friend Shane gave him 3 times that amount of buttons. Then his other friend Sam asked if he could have half of Mark’s buttons. How many buttons did Mark end up with?


Ines bought 3 pounds of peaches for 3 peaches * $2 / peach = $6. Ines has $20 - $6 = $14 left.
The answer: 14
Reverse engineering the question: Ines had $20 in her purse. She bought 3 pounds of peaches, which are $2 per pound at the local farmers’ market. How much did she have left?


There are 80 / 100 * 2300 = 1840 books in English at the library. Out of these books, only 60 / 100 * 1840 = 1104 were published inside the country. So there are 1840 - 1104 = 736 books in English published outside of the country.
The answer: 736
Reverse engineering the question:
In the school's library, there are 2300 different books. 80% of all the books are in English, but only 60% of these books were published in the country. How many English-language books have been published outside the country?