Both white cars were rented for 2 * 2 = $4 for every minute. All three red cars were rented for 3 * 3 = $9 for every minute. So all Lori's cars were rented for 4 + 9 = $13 for every minute. Three hours are 180 minutes, so Lori earned 13 * 180 = $2340 for renting all the cars.
The answer: 2340
Reverse engineering the question: Lori owns a carsharing company. There are three red cars and two white cars available to rent. Renting the white car costs $2 for every minute and the red car $3 for every minute. All cars were rented for 3 hours. How much money did Lori earn?


Reasoning and answer: Company A earned 300 * 4 = $1200 for big bottles of milk. Company B earned 350 * 3.5 = $1225 for big bottles of milk. Company B earned 1225 - 1200 = $25 more than company A.
The answer: 25
What was the question?
Question: Two companies A and B, are selling bottled milk. Company A sells a big bottle for $4 and Company B sells a big bottle for $3.5. Company A was able to sell 300 and company B 350 big bottles of milk. How much more money did one company make from the other?


If one intersection has 4 crosswalks, with 20 lines per crosswalk, there are 20 * 4 = 80 lines in all the crosswalks per intersection. If there are 5 intersections, the total number of lines in all the intersections is 80 * 5 = 400 lines.
The answer: 400
Reverse engineering the question: While driving up a road, Philip passed through 5 intersections. 4 crosswalks marked each intersection with a total of 20 lines per crosswalk. Calculate the total number of lines of the crosswalks in the five intersections.


Reasoning and answer: There were 12 zebras / 2 zebras / camel = 6 camels at the zoo. There were 4 monkeys / camel x 6 camels = 24 monkeys at the zoo. Therefore, Carla saw 24 monkeys - 2 giraffes = 22 more monkeys than giraffes.
The answer: 22
What was the question?
Question: Carla went to the zoo and counted 12 zebras in their enclosure. She then visited the camels and learned that there were only half as many camels as there were zebras. Next, she visited the monkeys and counted 4 times the number of monkeys as camels. Finally, she saw some giraffes and counted only 2 giraffes. How many more monkeys than giraffes did Carla see?


One pack of chips is 75 / 100 * 4 = $3 more expensive than a pack of pretzels. That means one pack of chips costs 4 + 3 = $7. So Maciek paid 4 * 2 = $8 for the pretzels. He also paid 7 * 2 = $14 for the chips. In total Maciek paid 8 + 14 = $22 for his purchases.
The answer: 22
Reverse engineering the question: A pack of pretzels costs $4, while a pack of chips is 75% more expensive. Maciek went and bought two packets of chips and two packets of pretzels. How much did he pay for his purchases?


Let's say the river's length in the straight part of the river is x. The total length of the river is the length of the straight part plus 3 times the length of the straight part for the crooked part, which is x + 3x = 80. The total length of the river is 4x = 80. The straight part of the river is x = 80 / 4 = 20 miles.
The answer: 20
Reverse engineering the question:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The length of the straight part of a river is three times shorter than the crooked part. If the river is 80 miles long, how long is the straight part of the river?