The four bags of Reese's cost $9 x 4 = $36. The three bags of Snickers cost $5 x 3 = $15. The five bags of Skittles cost $7 x 5 = $35. Therefore, the unicorn pinata and the treats cost $13 + $36 + $15 + $35 = $99.
The answer: 99
Reverse engineering the question: It's Ava's birthday party. Her parents bought a unicorn pinata for $13 and filled it with all of her favorite treats. They bought 4 bags of Reese's for $9 per bag, 3 bags of Snickers for $5 per bag, and 5 bags of Skittles for $7 per bag. How much did the unicorn pinata and the treats cost altogether?
Reasoning and answer: He has already done 264 this week because 34 + 20 + 123 + 64 + 23 = 264. If he does 60 he will have done as many as last week because 324 - 264 = 60. He has to do 61 on Saturday because 60 + 1 = 61.
The answer: 61
What was the question?
Question: Kenny wants to make sure he does more jumping jacks every week than he did the week before. He recorded that last week he did 324 total jumping jacks. On Saturday of this week, he looks at his records and sees that on Sunday he did 34. On Monday he did 20. On Tuesday he skipped a day. On Wednesday he did 123. On Thursday he did 64. On Friday he did 23. How many does he have to do on Saturday to make sure he beats last week's number?
The chef has served 58 - 35 = 23 children. The chef has served 23 x 2 = 46 seniors. Therefore, the total number of guests that the chef has served is 58 + 23 + 46 = 127.
The answer: 127
Reverse engineering the question: A chef has served 58 adults, 35 fewer children than the number of adults, and twice as many seniors as children. What is the total number of guests served?
Reasoning and answer: Start by finding how many fish were in the aquarium on the third day 6 * 2 * 2 = 24. On day three, Jason took out one - third of the fish 24 / 3 = 8. So at the end of day three, he has 24 - 8 = 16 fish. On day five he has 16 * 2 * 2 = 64 fish, but he takes out one - fourth. So he took out 64 / 4 = 16 fishes. So at the end of day five, he has 64 - 16 = 48 fish. On day seven he has 48 * 2 * 2 = 192 fish. He adds in 15 more, so he has 192 + 15 = 207 fish in total.
The answer: 207
What was the question?
Question: Jason has six fish in his aquarium. He realizes that every day the number of fish doubles. On the third day he takes out one-third of the fish. On the fifth day he takes out one-fourth of the fish. On the seventh day he adds 15 more fish. How many fish in total does he have?
Linda wants to do two coats, so the total area she will be painting is 2 coats * 600 sq. ft. / coat = 1200 sq. ft. A gallon of paint will cover 400 sq. ft., so Linda will need 1200 sq. ft. / 400 sq. ft. per can = 3 cans of paint.
The answer: 3
Reverse engineering the question: Linda is repainting her bedroom. The wall area is 600 sq. ft. If a gallon of paint can cover 400 sq. ft., how many gallon cans of paint will Linda have to buy if she wants to do two coats?
If Kimiko is 28, Omi is 2 * 28 years = 56 years old. Arlette is 3 / 4 * 28 years = 21 years old. If you add up their ages, it sums to 21 years + 56 years + 28 years = 105 years. The average age for the three is 105 years / 3 people = 35 years / person.
The answer: 35
Reverse engineering the question:
Omi is twice as old as Kimiko. Arlette is 3/4 times as old as Kimiko. If Kimiko is 28 years old, calculate the average age of the three?