Reasoning and answer: He sold 10 + 12 + 9 = 31 bicycles. He bought 15 + 8 + 11 = 34 bicycles. He now has 34 - 31 = 3 more than at Friday's opening.
The answer: 3
What was the question?
Question: On Friday, Hank opened his used-bicycle store with a stock of bicycles, all fixed-up and ready to ride. Over the course of the day, he sold 10 bicycles and bought an additional 15 to fix up. On Saturday, he sold 12 bicycles and bought 8 more. And on Sunday, he sold 9 bicycles and bought 11 more. What was the net increase in the number of bicycles in stock in Hank's store over the three days?


Remi drinks the same amount of water every day for a week except for when he spills some of it. His water bottle holds 20 ounces which he drinks 3 times a day, 20 x 3 = 60 ounces a typical day. Over 7 days, without spilling anything, Remi drinks 60 ounces x 7 days = 420 ounces. Except Remi spills 8 + 5 ounces of water during the week = 13 ounces of water Remi spills. Total, Remi drinks 420 ounces - 13 ounces of spilled water = 407 ounces Remi drank during the week.
The answer: 407
Reverse engineering the question: Remi wants to drink more water. He has a refillable water bottle that holds 20 ounces of water. That week Remi refills the bottle 3 times a day and drinks the whole bottle each time except for twice when he accidentally spills 5 ounces the first time and 8 ounces the second time. In 7 days how many ounces of water does Remi drink?


Reasoning and answer: First find the number of seeds that land in water: 300 seeds * 1 / 3 = 100 seeds. Then find the number of seeds that are eaten: 300 seeds * 1 / 6 = 50 seeds. Subtract the number of seeds that are destroyed to find the number that sprout: 300 seeds - 100 seeds - 50 seeds = 150 seeds. Then divide that number by 2 to find the number of sprouts that survive: 150 seeds / 2 = 75 seeds.
The answer: 75
What was the question?
Question: Each dandelion produces 300 seeds. 1/3rd of the seeds land in water and die. 1/6 of the starting number are eaten by insects. Half the remainder sprout and are immediately eaten. How many dandelions survive long enough to flower?


There are three times as many hogs as cats in King Henry's kingdom, meaning there are 75 / 3 = 25 cats. 60% of the number of cats in King Henry's kingdom is 60 / 100 * 25 = 15 cats. 5 less than 60% of the number of cats in King Henry's kingdom is 15 - 5 = 10 cats.
The answer: 10
Reverse engineering the question: There are three times as many hogs as cats in King Henry's kingdom. If there are 75 hogs, what's 5 less than 60% of the number of cats in King Henry's kingdom?


Reasoning and answer: First find how many hours Carla has to work: 12:00 - 8:00 = 4 hours. Then divide the total amount of laundry by the number of hours to find how many pieces Carla has to clean per hour: 80 pieces / 4 hours = 20 pieces / hour.
The answer: 20
What was the question?
Question: Carla needs to dry-clean 80 pieces of laundry by noon. If she starts work at 8 AM, how many pieces of laundry does she need to clean per hour?


Reasoning and answer: So for 3 of the days, there are 1 + 1 = 2 people eating. So for those days they use 3 * 2 = 6 plates. On 7 - 3 = 4 days the parents join them. On those days there are 2 + 2 = 4 people eating. They use 4 * 2 = 8 plates. So they use 8 * 4 = 32 plates. That means they use a total of 32 + 6 = 38 plates.
The answer: 38
What was the question?
Question:
Matt needs to buy new plates for his home. He only wants to do dishes once a week. Three days a week it is only him and his son eating and they use 1 plate each. On the remainder of the days, his parents join them and everyone uses 2 plates that day. How many plates does he need to buy?