Heidi's apartment has 6 * 3 = 18 rooms. Grant's apartment has 18 / 9 = 2 rooms.
The answer: 2
Reverse engineering the question: Danielle's apartment has 6 rooms. Heidi's apartment has 3 times as many rooms as Danielle's apartment. Grant's apartment has 1/9 as many rooms as Heidi's apartment. How many rooms does Grant's apartment have?


Reasoning and answer: She bought 1.5 pounds of chicken for $6.00 / pound so that's 1.5 * $6 = $9.00. She bought 4 sweet potatoes at $0.75 each so that's 4 * $0.75 = $3.00. She bought 2 heads of broccoli for $2.00 each so that's 2 * $2 = $4.00. The chicken is $9.00, lettuce is $3.00, tomatoes are $2.50, the sweet potatoes are $3.00, broccoli is $4.00 and Brussel sprouts are $2.50 for a total of $9 + $3 + $2.50 + $3 + $4 + $2.5 = $24.00. To get free delivery she needs to spend $35.00, and she already has $24.00 in her cart, so she needs to spend an extra $35 - $24 = $11.00.
The answer: 11
What was the question?
Question: To get free delivery, Alice needs to spend a minimum of $35.00 online at her favorite grocery store. In her cart she has 1.5 pounds of chicken at $6.00 per pound, 1 pack of lettuce for $3.00, cherry tomatoes for $2.50, 4 sweet potatoes at $0.75 each, 2 heads of broccoli for $2.00 each and a pound of Brussel sprouts for $2.50. How much more does she need to spend in order to get free delivery?


The total percentage of students who said they like chess or basketball is 10% + 40% = 50%. So, 250 x 50 / 100 = 125 students like chess or basketball.
The answer: 125
Reverse engineering the question: In a survey about the student's favorite sports, 40% said they like basketball, 10% like chess, 28% like soccer, and the rest said they like badminton. If 250 students were interviewed, how many students identified chess or basketball as their favorite sport?


Reasoning and answer: He was at the arcade for 3 * 60 = 180 minutes. So he put coins in 180 / 6 = 30 times. That means he spent 30 * .5 = $15.
The answer: 15
What was the question?
Question: John plays at the arcade for 3 hours. He uses $.50 for every 6 minutes. How much money did he spend, in dollars?


He needs 18 valentine's cards because 30 x .6 = 18. He will spend $36 on these because 18 x 2 = 36. The proportion of his income spent is .9 because 36 / 40 = .9. This is 90% of his income because .9 x 100 = 90.
The answer: 90
Reverse engineering the question: Mo is buying valentine's day cards for the class. There are 30 students and he wants to give a Valentine to 60% of them. They cost $2 each. If he has $40, what percentage of his money will he spend on Valentine?


Total meatballs on the plates 3 x 3 = 9. If two - thirds are eaten, one - third remaining on the plates is 9 / 3 = 3.
The answer: 3
Reverse engineering the question:
There are 3 meatballs on each spaghetti plate. If Theresa's 3 sons each eat two-thirds of the meatballs on their respective plates, how many meatballs are still left on their plates altogether?