If 10 hens lay 80 eggs, then 1 hen lays 80 / 10 = 8 eggs in 10 days. That means one hen is laying 8 / 2 = 4 eggs in 5 days. So in 15 days, 1 hen will lay 3 times more eggs, so 4 * 3 = 12 eggs. All hens in total will then lay 25 * 12 = 300 eggs in 15 days.
The answer: 300
Reverse engineering the question: Martin owns a farm with hens. 10 hens do lay 80 eggs in 10 days. Martin decided to buy 15 more hens. How many eggs will all hens lay in 15 days?


Reasoning and answer: For each 6 minutes she performs, Carlotta spends 6 * 3 minutes = 18 minutes practicing. For each 6 minutes she performs, Carlotta throws tantrums for 6 * 5 minutes = 30 minutes. Thus, in total, for each 6 minutes of performance time, she spends 18 minutes + 30 minutes + 6 minutes = 54 minutes on all three activities.
The answer: 54
What was the question?
Question: For every 1 minute that Carlotta sings on stage during the final opera performance, she spends an additional 3 minutes practicing and 5 minutes throwing temper tantrums. If her final stage performance is 6 minutes long, what is the total combined amount of time, in minutes, that she spends practicing, throwing tantrums, and singing in the final stage performance?


Louie got 100% - 80% = 20% of the total items incorrect, which is equal to 5 items. So 1% is equal to 5 / 20 = 1 / 4 of an item. Hence, the total number of items, represented by 100%, on the math quiz was 1 / 4 of an item x 100 = 25.
The answer: 25
Reverse engineering the question: Louie obtained 80% on a math quiz. He had 5 mistakes. How many items were there on the math quiz?


Reasoning and answer: Laura expects 100 - 5 = 95% to show up. Laura expects 220 * 0.95 = 209 guests.
The answer: 209
What was the question?
Question: Laura is planning her wedding. She expects 220 people to attend the wedding, but she has been told that approximately 5% typically don't show. How many people will go to her wedding?


Kyle and Tasha caught 36 - 8 = 28 fish. Kyle caught 28 / 2 = 14 fish.
The answer: 14
Reverse engineering the question: Carla, Kyle, and Tasha caught 36 fish. If Kyle and Tasha caught the same number of fish and Carla caught 8, how many fish did Kyle catch?


36 weeks of school x 2 days of the week = 72 days of school. 1 Wednesday + 2 Fridays = 3 days of school missed. 72 days of school – 3 days of school missed = 69 peanut butter and jelly sandwiches eaten.
The answer: 69
Reverse engineering the question:
Jackson’s mom packs him a peanut butter and jelly sandwich for his school lunch on Wednesdays and Fridays. There are 36 weeks of school and Jackson has only missed 1 Wednesday and 2 Fridays. How many peanut butter and jelly sandwiches did he eat for lunch this school year?