Sue will drive 7 - 4 = 3 days a week. So she will pay 2100 * 3 / 7 = $900.
The answer: 900
Reverse engineering the question: Sue and her sister buy a $2,100 car. They agree to split the cost based on the percentage of days use. Sue's sister will drive the car 4 days a week and Sue will get the rest of the days. How much does Sue have to pay?


Reasoning and answer: Let p be the number of phone chargers Anna has and l be the number of laptop chargers. We know that l = 5p and l + p = 24. Substituting the first equation into the second equation, we get 5p + p = 24. Combining like terms, we get 6p = 24. Dividing both sides of the equation by 6, we get p = 4.
The answer: 4
What was the question?
Question: Anna has a certain number of phone chargers and five times more laptop chargers than phone chargers. If she has 24 chargers total, how many phone chargers does she have?


610 - 49 = 561, and then 561 - 81 = 480. There were 7 - 2 = 5 other pieces. 480 / 5 = 96 dollars. The other 5 pieces cost $96 each.
The answer: 96
Reverse engineering the question: Jangshe spent $610 on 7 pieces of clothing. One piece was $49 and another piece was $81. If the other pieces were all the same price, how many dollars was one of the other pieces?


Reasoning and answer: Each gust blows the leaf forward 5 feet, so 11 gusts will blow it forward 5 * 11 = 55 feet. Each swirl after a gust blows it back 2 feet, so 11 swirls will blow it back 2 * 11 = 22 feet. After 11 gusts, the leaf has traveled 55 - 22 = 33 feet down the sidewalk.
The answer: 33
What was the question?
Question: A leaf is being blown down a sidewalk by swirling gusts of wind. For every five feet that a gust blows it forward, the wind swirls and blows it back two feet. How many feet has it traveled down the sidewalk after 11 gusts of wind?


Start with the consumed oranges: 60 oranges - 10 oranges = 50 oranges. To find the stolen oranges: 50 oranges / 2 = 25 oranges. To find the number of oranges after the return: 25 oranges + 5 oranges = 30 oranges.
The answer: 30
Reverse engineering the question: Johann had 60 oranges. He decided to eat 10. Once he ate them, half were stolen by Carson. Carson returned exactly 5. How many oranges does Johann have now?


There are 15 - 6 = 9 students who like French fries only. There are 10 - 6 = 4 students who like burgers only. So, 9 + 4 + 6 = 19 students like either French fries, burgers, or both. Hence, 25 - 19 = 6 students do not like either fries or burgers.
The answer: 6
Reverse engineering the question:
In a class of 25 students, students were asked if they like French fries, burgers, or neither. 15 students said they like French fries and 10 said they like burgers, with these statistics including the responses of 6 students who said they like both French fries and burgers. How many students do not like either food?