The chips were divided into 4 + 6 = 10 parts. Each part has 100 / 10 = 10 chips. Since Lyle owns 6 parts, then he has 6 x 10 = 60 chips. This is 60 / 100 x 100 = 60% of the entire chips.
The answer: 60
Reverse engineering the question: One hundred chips were divided by Ian and Lyle in the ratio 4:6. What percentage of the chips did Lyle have?


Reasoning and answer: He drives 75 * 10 = 750 miles. So he uses 750 / 50 = 15 gallons. That means he spends 15 * 3 = $45 on gas.
The answer: 45
What was the question?
Question: Toms car gets 50 miles to the gallon. He drives 75 miles per day. If gas is $3 per gallon how much does he spend on gas in 10 days?


25 - 3 = 22 students. 24 - 4 = 20 students. She had 22 + 20 = 42 students.
The answer: 42
Reverse engineering the question: On the first day of school, Mrs. McGillicuddy had 25 students registered for the morning session of kindergarten, but 3 students were absent; and she had 24 students registered for the afternoon session, but 4 students were absent. How many students did Mrs. McGillicuddy have over the two kindergarten sessions?


Reasoning and answer: Roberta's bag costs $45 - $17 = $28. Roberta spend $28 / 4 = $7 on lunch. Roberta spend 45 + 28 + 7 = 80 in total. Roberta has $158 - 80 = $78 left.
The answer: 78
What was the question?
Question: Roberta takes $158 with her on a shopping trip to the mall. She spends $45 on new shoes, $17 less on a new bag, and a quarter of the price of the bag for lunch. How much money does she have left after these purchases?


On Monday Zach spent 620 * 0.5 = 310 dollars on miles. On Thursday Zach spent 744 * 0.5 = 372 dollars on miles. In total, Zach spent 150 + 310 + 372 = 832 dollars.
The answer: 832
Reverse engineering the question: Zach rented a car for $150 plus 50 cents for each mile. He drove 620 miles on Monday and another 744 miles on Thursday. How much did he spend?


Jose can earn $3 x 8 = $24 per day for kids. He charges $3 x 2 = $6 per adult. So, he can earn $6 x 10 = $60 per day for adults. Jose earns $60 + $24 = $84 per day for kids and adults. Therefore, he can earn $84 x 7 = $588 per week.
The answer: 588
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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Jose owns a swimming pool. He charges $3 for kids and twice that amount for adults. If 8 kids and 10 adults swim in his swimming pool per day, how much money will he earn per week?