user: The store made a $50 x 30 / 100 = $15 profit for selling it 30% above the cost. So, the book was sold for $50 + $15 = $65. During a sale, the book’s selling price decreased by $65 x 10 / 100 = $6.50. So, the book was sold for $65 - $6.50 = $58.50. There was $58.50 - $50 = $8.50 profit after the discount. Therefore, the percent profit is $8.50 / $50 x 100% = 17%.
The answer: 17
Reverse engineering the question: A store marks a book 30% above the cost. But during a sale, a 10% discount was given. If the book costs $50, what is the percent profit?
Reasoning and answer: Since the pay for a person holding a degree is three times the amount paid for a diploma holder, Jared will earn 3 * $4000 = $12000 per month. In a year with 12 months, Jared will earn a total of 12 * 12000 = 144000.
The answer: 144000
What was the question?
Question: For an operations manager job at a company, a person with a degree earns three times the amount paid to a diploma holder for the same position. How much will Jared earn from the company in a year after graduating with a degree if the pay for a person holding a diploma certificate is $4000 per month?
Twice the distance Amy biked yesterday is 12 * 2 = 24 miles. If Amy biked 3 miles less than twice as far as yesterday, she biked 24 - 3 = 21 miles today. The total distance she biked in the two days is 21 + 12 = 33 miles.
The answer: 33
Reverse engineering the question: Amy biked 12 miles yesterday. If she biked 3 miles less than twice as far as yesterday, how many miles did she bike in total in the two days?
Reasoning and answer: The total of minutes the treatment will take is 2 hours x 60 minutes / hour = 120 minutes. After 120 minutes has passed the total amount of drops that the patient will receive is 20 drops / minute x 120 minutes = 2400 drops. Knowing the number of drops, we know that the patient has taken 2400 drops x 5 ml / 100 drops = 120 ml.
The answer: 120
What was the question?
Question: A patient is receiving treatment through a saline drip which makes 20 drops per minute. If the treatment lasts 2 hours, and every 100 drops equal 5 ml of liquid, how many milliliters of treatment will the patient receive after the 2 hours have passed?
There was an increase of 100 x 15 / 100 = 15 visitors in November. So, the number of visitors in November was 100 + 15 = 115. In December, the number of visitors was 115 + 15 = 130. Therefore, a total of 100 + 115 + 130 = 345 visitors listed in these three months.
The answer: 345
Reverse engineering the question: An online newspaper had listed 100 visitors in October. The number of visitors in November increased by 15%. There were 15 more visitors in December than in November. What is the total number of visitors for these three months?
The two t - shirts amount to $8 x 2 = $16. The two bags amount to $10 x 2 = $20. So Timothy spent $16 + $20 = $36 for the shirts and bags. He still has $50 - $36 = $14 left to spend for the key chains. With the money, he can buy $14 / $2 = 7 sets of key chains. Therefore, he can buy 7 x 3 = 21 pieces of key chains.
The answer: 21
Reverse engineering the question:

assistant: Timothy has $50 to spend at a souvenir shop. He sees some t-shirts that cost $8 each, key chains that sell 3 pieces for $2, and bags that cost $10 each. Timothy buys 2 t-shirts and 2 bags. How many pieces of key chains can he buy with the amount of money he has left?