Reasoning and answer: 15% of $300 is (15 / 100) * $300 = $45. Emma will earn an annual ROI of $45 for 2 years for a total of $45 * 2 = $90. 10% of $500 is (10 / 100) * $500 = $50. Briana will earn an annual ROI of $50 for 2 years for a total of $50 * 2 = $100. The difference between their ROI after 2 years is $100 - $90 = $10.
The answer: 10
What was the question?
Question: Emma and Briana invested some capital into a business. Emma's investment is supposed to yield 15% of the capital annually while Briana's should yield 10% annually. If Emma invested $300 and Briana invested $500, what will be the difference between their return-on-investment after 2 years?


If Tina's pail holds 4 gallons and Tommy's holds 2 more gallons than hers, that means Tommy's holds 4 + 2 = 6 gallons. If Timmy's pail holds twice as much as Tommy's 6 - gallon pail, that means it holds 6 * 2 = 12 gallons. Therefore, in 1 trip that means all three move a total of 4 + 6 + 12 = 22 gallons. In three trips, that means they would move a total of 22 * 3 = 66 gallons.
The answer: 66
Reverse engineering the question: Timmy, Tommy and Tina are filling up a kiddie pool in their backyard. Each has a pail they fill with water from a house before dumping it into the pool. If Timmy's pail holds twice as much water as Tommy's, and Tommy's holds 2 gallons more than Tina's, and Tina's is 4 gallons, how much water do the three of them fill the pool with after 3 trips each?


Reasoning and answer: The number of female students is 4 times 29: 4 * 29 = 116. There are a total of 29 + 116 = 145 students in the hall. There are 29 benches so each bench should take 145 / 29 = 5 students.
The answer: 5
What was the question?
Question: The number of female students in the school hall is 4 times as many as the number of male students. If there are 29 male students, and there are 29 benches in the hall, at least how many students can sit on each bench for them to all fit in the hall?


For the triangles, he drew 36 lines because 12 times 3 equals 36. For the squares, he drew 32 lines because 8 times 4 equals 32. For the pentagons, he drew 20 lines because 4 times 5 equals 20. He drew 88 lines in total because 36 plus 32 plus 20 equals 88.
The answer: 88
Reverse engineering the question: After geometry class, Bill wants to count how many lines he drew. For each shape, he drew one line per side. If he drew 12 triangles, 8 squares, and 4 pentagons, how many lines did he draw?


Reasoning and answer: Three less than 5 is 5 - 3 = 2. Since one ton is 2000 pounds, three tons is 2000 * 3 = 6000 pounds. Thus, in 6000 pounds, he can make 6000 / 2 = 3000 pillows.
The answer: 3000
What was the question?
Question: Teddy is a pillow-maker. He uses 3 less than 5 pounds of fluffy foam material to make each pillow. If Teddy has three tons of fluffy foam material, how many pillows can he make?


Reasoning and answer: One - third of the classrooms have 30 desks, so there are 1 / 3 * 15 = 5 classrooms like that. The rest, which means 15 - 5 = 10 classrooms, have 25 desks. One - third of the classrooms can fit 5 * 30 = 150 students. The rest can fit 10 * 25 = 250 students. So in total, the school can be filled with 150 + 250 = 400 students.
The answer: 400
What was the question?
Question:
A school has 15 classrooms. One-third of these classrooms have 30 desks in each classroom and the rest have 25 desks in each classroom. Only one student can sit at one desk. How many students can this school accommodate so that everyone has their own desk?