Eric has a total of 12 + 6 = 18 white and blue marbles. Thus, he has 20 - 18 = 2 green marbles.
The answer: 2
Reverse engineering the question: Eric has 20 marbles. He has 12 white marbles, 6 blue marbles, and the rest are green marbles. How many green marbles does Eric have?
Reasoning and answer: Leah spent 28 / 7 = $4 on a milkshake. She had 28 - 4 = $24 left. She put half in her savings account and half in her wallet, so she had 24 / 2 = $12 in her wallet. Her dog shredded all the money in her wallet but $1, so Leah lost 12 - 1 = $11.
The answer: 11
What was the question?
Question: Leah earned $28 working odd jobs around the neighborhood. She spent a seventh of it on a milkshake and put half of the rest in her savings account. She left the remaining money in her wallet. Her dog got ahold of her wallet and shredded all the money inside but $1. How many dollars did Leah lose?
Jeff was able to run a total of 60 x 3 = 180 minutes from Monday to Wednesday. On Thursday, Jeff ran for 60 - 20 = 40 minutes only. On Friday, he ran for 60 + 10 = 70 minutes. Therefore, Jeff ran a total of 180 + 40 + 70 = 290 minutes.
The answer: 290
Reverse engineering the question: Jeff committed to run for an hour a day during weekdays. On Thursday, he cut short his run by 20 minutes but was able to jog 10 minutes more on Friday. How many minutes was he able to run for that week?
Reasoning and answer: The bulk warehouse has 48 cans for $12.00 so that's 12 / 48 = $0.25 a can. The local grocery store has 12 cans for $6.00 so that's 6 / 12 = $0.50 a can. The grocery store offer is $0.50 a can and the warehouse is $0.25 a can so the grocery store is .50 - .25 = $0.25 more expensive per can.
The answer: 25
What was the question?
Question: A bulk warehouse is offering 48 cans of sparkling water for $12.00 a case. The local grocery store is offering the same sparkling water for $6.00 and it only has 12 cans. How much more expensive, per can, in cents, is this deal at the grocery store?
Week 1:600 / 2 = 300. 600 - 300 = 300 pages remain. Week 2:300(.30) = 90 pages. 300 - 90 = 210 pages remain. Week 3:210 pages.
The answer: 210
Reverse engineering the question: Coral is reading a book that is 600 pages long. She reads half of it in the first week, and 30 percent of the remaining pages the second week. How many pages must she read the third week in order to finish the book?
Let x represent the number of miles Kati drives. Michelle:3x. Tracy:20 + 2(3x) = 20 + 6x. Total:x + 3x + 20 + 6x = 1000. 10x + 20 = 1000. 10x = 980. x = 98 miles. 3(98) = 294 miles.
The answer: 294
Reverse engineering the question:
Tracy, Michelle, and Kati take a road trip that is a total of 1000 miles. Tracy drives 20 miles more than twice Michelle, and Michelle drives 3 times the amount that Katie drives. How many miles does Michelle drive?