Ryan used 36 / 3 = 12 tokens on Pac - Man. Ryan used 36 / 4 = 9 tokens on Candy Crush. Ryan used a total of 12 + 9 + 7 = 28 tokens on all three games. Ryan had 36 - 28 = 8 tokens left. Ryan’s parents bought him 2 * 7 = 14 more tokens. Ryan had 8 + 14 = 22 tokens after his parents bought him some.
The answer: 22
Reverse engineering the question: Ryan started with 36 tokens at the arcade. Ryan wasted a third of his tokens on Pac-Man, a fourth of his tokens on Candy Crush, and 7 on Ski-ball. Then, his parents bought him seven times as many tokens as he spent on Ski-ball. How many tokens did Ryan end up with?


Reasoning and answer: Tim gave 40 / 2 = 20 balls to Robert. Robert now has 25 + 20 = 45 balls.
The answer: 45
What was the question?
Question: Robert had 25 balls. Tim gave him half of his 40 balls. How many balls does Robert have now?


He had 40 before losing them into the sewer because 20 x 2 = 40. He started with 100 because 40 / .4 = 100.
The answer: 100
Reverse engineering the question: Archie is playing with his marbles outside. He loses 60% of them into the street. Of the remaining ones, he loses half down a sewer. If he has 20 left, how many did he start with?


Reasoning and answer: In total, the lollipops needed 5ml of food colouring * 100 lollipops = 500ml of food colouring. This means that the hard candies needed 600ml total food colouring – 500ml food colouring for lollipops = 100ml of food colouring. So each hard candy needed 100ml of food colouring / 5 hard candies = 20 ml of food colouring.
The answer: 20
What was the question?
Question: A candy store uses food colouring in various candies. Each lollipop uses 5ml of food colouring, and each hard candy also needs food colouring. In one day, the candy store makes 100 lollipops and 5 hard candies. They do not use food colouring in anything else. The store has used 600ml of food colouring by the end of the day. How much food colouring, in millilitres, does each hard candy need?


Ivy has 60 / 2 = 30 dolls. Ivy has 30 / 3 * 2 = 20 collectors edition dolls.
The answer: 20
Reverse engineering the question: Dina has 60 dolls. She has twice as many dolls as Ivy. 2/3 of Ivy's dolls are collectors editions. How many collectors edition dolls does Ivy have?


Rene finished 30 x 4 = 120 pages in 240 minutes. Lulu finished 27 x 4 = 108 pages in 240 minutes. Cherry finished 25 x 4 = 100 pages in 240 minutes. Therefore they have finished a total of 120 + 108 + 100 = 328 pages in 240 minutes.
The answer: 328
Reverse engineering the question:
Rene can finish reading 30 pages in 60 minutes. Lulu can read 27 pages in 60 minutes and Cherry can read 25 pages in 60 minutes. If they have been reading for 240 minutes now, how many pages have they finished reading in total?