Reasoning and answer: Tom’s rabbit is 8 / 2 = 4 years old. His dog is 4 x 3 = 12 years old.
The answer: 12
What was the question?
Question: Tom’s cat is 8 years old. His rabbit is half the age of his cat. His dog is three times as old as his rabbit. How old is the dog?


First find the total number of items in the attic by dividing the number of useful items by the percentage of useful items: 8 items / .2 = 40 items. Then multiply the total number of items by the percentage that are junk to find the number of junk items: 40 items * .7 = 28 items.
The answer: 28
Reverse engineering the question: Mason is cleaning out all the junk in his attic. 20% of the items are useful, 10% are valuable heirlooms, and 70% are junk. If Marcus's attic has 8 useful items in it, how many junk items does it have?


Reasoning and answer: To the initial 2 pounds of jelly beans, he added enough brownies to cause the weight to triple, bringing the weight to 2 * 3 = 6 pounds. Next, he added another 2 pounds of jelly beans, bringing the weight to 6 + 2 = 8 pounds. And finally, he added enough gummy worms to double the weight once again, to a final weight of 8 * 2 = 16 pounds.
The answer: 16
What was the question?
Question: Ken created a care package to send to his brother, who was away at boarding school. Ken placed a box on a scale, and then he poured into the box enough jelly beans to bring the weight to 2 pounds. Then, he added enough brownies to cause the weight to triple. Next, he added another 2 pounds of jelly beans. And finally, he added enough gummy worms to double the weight once again. What was the final weight of the box of goodies, in pounds?


The difference in width between where they're starting from and their destination is 80 - 50 = 30 yards. The width increases 2 yards every 10 m along the river so they would have to cover (30 / 2) * 10 = 150 meters. Traveling at the rate of 5m / s, he will spend 150 / 5 = 30 seconds.
The answer: 30
Reverse engineering the question: Rodney and Todd are rowing down a river that is 50 yards wide at one end. If the river's width increases from this end uniformly by 2 yards every 10 meters along, and they row along the river at a rate of 5 m/s, how long (in seconds) will it take them to get to the point where the river is 80 yards wide?


Reasoning and answer: There are 30 + 15 + 40 = 85 minutes accounted for. She spent 2 * 60 = 120 minutes. She spent 120 - 85 = 35 minutes cleaning her room.
The answer: 35
What was the question?
Question: Miriam spent 30 minutes doing laundry, 15 minutes cleaning the bathroom, a certain amount of time cleaning her room, and 40 minutes doing homework. If she spent a total of two hours on these tasks, how long, in minutes, did she spend cleaning her room?


Reasoning and answer: Since each package weighed 4 pounds, the first butcher delivered 10 * 4 = 40 pounds. The second butcher's delivery was 7 * 4 = 28 pounds. The first two butchers therefore delivered 40 + 28 = 68 pounds. Subtracting that weight from the total weight of ground beef gives 100 - 68 = 32 pounds. It therefore means the third butcher delivered 32 / 4 = 8 packages.
The answer: 8
What was the question?
Question:
The owner of a Turkish restaurant wanted to prepare traditional dishes for an upcoming celebration. She ordered ground beef, in four-pound packages, from three different butchers. The following morning, the first butcher delivered 10 packages. A couple of hours later, 7 packages arrived from the second butcher. Finally, the third butcher’s delivery arrived at dusk. If all the ground beef delivered by the three butchers weighed 100 pounds, how many packages did the third butcher deliver?