Reasoning and answer: At 7 days a week, it takes Bert 2 * 7 = 14 days of daily crossword puzzles to use up a pencil. Since Bert does one puzzle a day, each crossword puzzle has 1050 / 14 = 75 words.
The answer: 75
What was the question?
Question: Bert fills out the daily crossword puzzle in the newspaper every day. He uses up a pencil to fill out the puzzles every two weeks. On average, it takes him 1050 words to use up a pencil. How many words are in each crossword puzzle on average?


First find the total number of baby minks: 30 minks * 6 babies / mink = 180 minks. Add this to the number of adult minks: 180 minks + 30 minks = 210 minks. Then divide this number in half to find how many aren't set free: 210 minks / 2 = 105 minks. Then divide the remaining number of minks by the number of minks per coat to find the number of coats: 105 minks / 15 minks / coat = 7 coats.
The answer: 7
Reverse engineering the question: It takes 15 mink skins to make a coat. Andy buys 30 minks and each mink has 6 babies, but half the total minks are set free by activists. How many coats can he make?


Reasoning and answer: Three times the number of red candies is 40 * 3 = 120. So, for yellow candies, there were 20 less than 120 candies, or a total of. 120 - 20 = 100 yellow candies. Half as many blue candies as yellow candies is 100 / 2 = 50 blue candies. If Carlos ate all of the yellow candies, then only the 40 red and 50 blue candies remained for a total of 40 + 50 = 90 candies.
The answer: 90
What was the question?
Question: With one mighty blow, Maria cracked open the pinata, and candies spilled all over the floor. There were 40 red candies, 20 less than three times as many yellow candies as red candies, and half as many blue candies as yellow candies. If Carlos ate all of the yellow candies, how many candies remained?


Martin invited 5 * 2 = 10 people from his school. People from the sports club got 5 + 10 = 15 invitations. So in total from the sports club, hometown and school, Martin invited 5 + 10 + 15 = 30 people. All other invitations are 20% of the previous total, which means 20 / 100 * 30 = 6. That means Martin invited to his party 30 + 6 = 36 people.
The answer: 36
Reverse engineering the question: Martin is organizing a party, and he invited many of his colleagues. He invited 5 people from his hometown and twice as many people from his school. Martin invited also as many people from his sports club as the sum of people invited from his hometown and his school. The remaining invitations represent 20% of the total previously mentioned. How many people can potentially come to the party Martin is organizing?


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?


Reasoning and answer: He writes each friend 3 * 2 = 6 pages a week. So he writes 6 * 2 = 12 pages every week. That means he writes 12 * 52 = 624 pages a year.
The answer: 624
What was the question?
Question:
James writes a 3-page letter to 2 different friends twice a week. How many pages does he write a year?