The pen is shorter than the pencil by 2 centimeters, so it's 12 - 2 = 10 centimeters long. That means the rubber is 10 - 3 = 7 centimeters long. So all accessories are 7 + 10 + 12 = 29 centimeters long altogether.
The answer: 29
Reverse engineering the question: A pen is longer than the rubber by 3 centimeters, and shorter than the pencil by 2 centimeters. Considering the pencil is 12 centimeters long, what is the total length of the rubber, the pen, and the pencil altogether?


Reasoning and answer: If there are 40 people, each person gets 600 / 40 = 15 cans. Thirty percent of the total number of people present is 30 / 100 * 40 = 12. If there are 30% fewer people, the number of people who are to be fed is 40 - 12 = 28. Since each person is given 15 cans, twenty - eight people will need 15 * 28 = 420 cans.
The answer: 420
What was the question?
Question: Paddy's Confidential has 600 cans of stew required to feed 40 people. How many cans would be needed to feed 30% fewer people?


The cost of the pots is 3 * $20 = $60. The cost of 4 pans is $100 - $60 = $40. Since each pan is the same price, the cost of 1 pan is $40 / 4 = $10. The cost of 2 pans is $10 + $10 = $20.
The answer: 20
Reverse engineering the question: Katerina purchases 3 pots and 4 pans at the home goods store. Each pot costs $20. The total cost of Katerina's items is $100. If each pan is the same price, what is the cost of 2 pans?


Reasoning and answer: For the short stack orders, Hank needs to make 3 x 9 = 27 pancakes. For the big stack orders, he needs to make 5 x 6 = 30 pancakes. Altogether, Hank needs to make 27 + 30 = 57 pancakes.
The answer: 57
What was the question?
Question: At Hank’s cafe, he sells big stack pancakes which have 5 pancakes and short stack pancakes which have 3 pancakes. If 9 customers order the short stack and 6 customers order the big stack, how many pancakes does Hank need to make?


First find the number of seconds in an hour: 1 hour * 60 minutes / hour * 60 seconds / minute = 3600 seconds / hour. Then divide the total number of seconds per hour by the number of seconds it takes Janet to read one post: 3600 seconds / hour / 10 seconds / post = 360 posts / hour. Then multiply the number of posts she checks per hour by her pay per post to find her hourly pay: $0.25 / post * 360 posts / hour = $90 / hour.
The answer: 90
Reverse engineering the question: Janet is getting paid to moderate social media posts. She gets paid 25 cents per post she checks. If it takes her 10 seconds to check a post, how much does she earn per hour?


Altogether, Jim has 200g + 100g + 100g = 400g of flour. He can therefore bake 400g / 200g = 2 loaves of bread.
The answer: 2
Reverse engineering the question:
Jim is baking loaves of bread. He has 200g of flour in the cupboard, 100g of flour on the kitchen counter, and 100g in the pantry. If one loaf of bread requires 200g of flour, how many loaves can Jim bake?