First find the cost of fixing the wall: $1200 * 1 / 6 = $200. Then add the cost of the replacement stove to find the total cost: $200 + $1200 = $1400.
The answer: 1400
Reverse engineering the question: Jason's stove catches on fire. Buying a replacement will cost $1200 and fixing the damage to the wall behind it will cost 1/6th as much. How much does he spend in total?
Reasoning and answer: Twice the age of 6 is 6 x 2 = 12 years old. At 12 years old, Mandy was reading books 5 x 8 = 40 pages long. 8 years later, Mandy was 12 + 8 = 20 years old. At 20 years old, Mandy was reading books 3 x 40 = 120 pages long. Presently, she reads books that are 120 x 4 = 480 pages long.
The answer: 480
What was the question?
Question: Mandy started reading books with only 8 pages when she was 6 years old. By the time she was twice that age, she was reading books 5 times longer, and 8 years later, she was reading books 3 times longer than that. Presently, she reads books that are 4 times the previous length. How many pages do the books she reads now have?
First find the probability Jerry gets a blue egg with 5 pieces of candy by multiplying the independent probabilities: 4 / 5 * 1 / 4 = 1 / 5 = 20%. Then find the probability he gets a purple egg with 5 pieces of candy the same way: 1 / 5 * 1 / 2 = 1 / 10 = 10%. Then add the probabilities of the two possible ways to get 5 pieces of candy to find the total probability: 20% + 10% = 30%.
The answer: 30
Reverse engineering the question: 4/5 of the Easter eggs are blue and 1/5 are purple. Half the purple eggs have five pieces of candy each, and 1/4 of the blue eggs do. The rest of the eggs only have one piece of candy. If Jerry opens one egg at random, what is the percentage chance he'll get 5 pieces of candy?
Reasoning and answer: First find how many MB are left to download: 880 MB - 310 MB = 570 MB. Then divide that number by the download speed to find the download time: 570 MB / 3 MB / minute = 190 minutes.
The answer: 190
What was the question?
Question: Mason is trying to download a 880 MB game to his phone. After downloading 310 MB, his Internet connection slows to 3 MB/minute. How many more minutes will it take him to download the game?
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?
Ivan's dog weighs 63 / 7 = 9 pounds. Thus, the two dogs weigh 63 + 9 = 72 pounds.
The answer: 72
Reverse engineering the question:
Evan's dog weighs 63 pounds; it weighs 7 times as much as Ivan's dog. Together, what is the weight of the dogs?