She gave out 50 - 8 = 42 stickers in total. She gave 4 * 5 = 20 stickers to her friends. She gave out 42 - 20 = 22 stickers to the rest of the class. This means there are 22 / 2 = 11 other students in the class. There are a total of 1 + 5 + 11 = 17 students in the class.
The answer: 17
Reverse engineering the question: Mary brought 50 stickers to class. She gave 4 stickers to each of her 5 friends. She gave everyone else in class two stickers each. If she has 8 stickers left over, how many students are in the class, including Mary?


Reasoning and answer: If Mark bought 50 cans of milk, the number of times Jennifer added 6 cans for every 5 that Mark bought is 50 / 5 = 10 times. The total number of additional cans she bought is 10 * 6 = 60 cans. If she initially had 40 cans, she went home with 40 + 60 = 100 cans of milk.
The answer: 100
What was the question?
Question: Jennifer purchased 40 cans of milk at the store before meeting her classmate Mark, who was also buying milk. Jennifer bought 6 additional cans for every 5 cans Mark bought. If Mark purchased 50 cans, how many cans of milk did Jennifer bring home from the store?


To carry 17 objects, three at a time, it takes 17 / 3 = 5 and 2 / 3 loads. This calculation means that she takes 5 trips carrying 3 objects per trip, and then she takes one additional trip carrying only two objects. Thus, in reality, she takes 5 + 1 = 6 trips to the surface.
The answer: 6
Reverse engineering the question: Gretchen is a scuba diver. She likes to hunt for treasure on the ocean's floor, but when she finds something to keep, she must carry it back to the surface of the water to give it to her shipmate on the boat. She can only carry 3 objects at a time while she swims underwater. If she finds 17 objects underwater, what is the fewest number of trips to the surface of the water she must take to carry all 17 objects to the boat?


Reasoning and answer: Carlson bought land that cost $20 per square meter, therefore the size of the land he bought is 8000 / 20 = 400. And the size of the other land he bought is 4000 / 20 = 200. Therefore the total size of the land he owns is 400 + 200 + 300 = 900.
The answer: 900
What was the question?
Question: Carlson bought land that cost $8000 and additional land that cost $4000. He initially owned 300 square meters of land. If the land he bought costs $20 per square meter, how big is his land after buying the new land?


It takes 10 minutes to wash 4 windows and he has 64 windows so that breaks down to 64 / 4 = 16 units. It takes 10 minutes to wash a unit of windows and he has 16 units so 10 * 16 = 160 minutes.
The answer: 160
Reverse engineering the question: It takes David 10 minutes to wash 4 windows. David's house has 64 windows. How many minutes will it take David to wash all of the windows?


It costs $1 + $3 = $4 to make each bracelet. Your total cost is 25 * $4 = $100. Total revenue is 25 * $6 = $150. Total profit is $150 - $100 = $50.
The answer: 50
Reverse engineering the question:
You start a business selling charm bracelets. You spend $1 on the string for each bracelet and $3 on beads for each bracelet. You sell the bracelets for $6 each. If you sell 25 bracelets, how much profit will you make?