First figure out how long both color coats will take to dry: 3 minutes * 2 = 6 minutes. Then add up the time for the base coat, top coat, and color coats: 6 minutes + 2 minutes + 5 minutes = 13 minutes.
The answer: 13
Reverse engineering the question: Jane is painting her fingernails. She applies a base coat that takes 2 minutes to dry, two color coats that take 3 minutes each to dry, and a clear top coat that takes 5 minutes to dry. How many minutes total does Jane spend waiting for her nail polish to dry?


Reasoning and answer: The cost of the popcorn is $5 x 80 / 100 = $4. The cost of a can of soda is $4 x 50 / 100 = $2. The cost of 4 tickets is $5 x 4 = $20. The cost of 2 sets of popcorn is $4 x 2 = $8. The cost of 4 cans of soda is $2 x 4 = $8. Therefore, the family paid a total of $20 + $8 + $8 = $36.
The answer: 36
What was the question?
Question: A movie ticket costs $5. The cost of the popcorn is 80% of the cost of the ticket and a can of soda costs 50% of the cost of the popcorn. A family bought 4 tickets, 2 sets of popcorn, and 4 cans of soda. How much did they spend?


If on the return journey to its home, the alligator took 2 more hours than it took to travel to the Nile Delta, Paul took 4 + 2 = 6 hours to travel back to its home. The total time Paul took to travel from its home to the Nile Delta and back is 6 + 4 = 10. On his return journey, Paul traveled with six other alligators, and since each alligator traveled for six hours up the Nile to their home, they took a total of 6 * 6 = 36 hours to do so. Together with Paul, all the alligators took 10 + 36 = 46 hours traveling between Nile Delta and up the Nile.
The answer: 46
Reverse engineering the question: It took an alligator named Paul 4 hours to walk from his home at the River Nile to the Nile Delta. On the return journey, Paul traveled with six other alligators, the journey taking 2 more hours than Paul took to walk to the Nile Delta, to reach their home at the River Nile. What's the combined time the alligators walked?


Reasoning and answer: The difference in cubic yards between the two cities is 9000 - 6400 = 2600 cubic yards. Since the number of people living in a city per cubic yard is 80, there are 80 * 2600 = 208000 more people living in a city with 9000 cubic yards than a city with 6400 cubic yards.
The answer: 208000
What was the question?
Question: In a city, the number of people living per cubic yard is 80. How many more people are in a city with 9000 cubic yards than a city with 6400 cubic yards?


Faith earns $13.50 x 8 = $108 per day. Since she works 5 days a week, she earns 5 x $108 = $540 per week. She gets an additional 2 x $13.50 = $27 per day for the overtime pay. She earns a total of $27 x 5 = $135 additional pay for her weekly overtime. Therefore, Faith earns $540 + $135 = $675 per week.
The answer: 675
Reverse engineering the question: Faith is getting paid $13.50 per hour. She normally works 8 hours a day, 5 days a week, plus 2 hours of overtime per day. How much will she earn by the end of the week?


The ping pong balls cost 10000 * .10 = $1000. So the discount is 1000 * .30 = $300. So he pays 1000 - 300 = $700.
The answer: 700
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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Ping pong balls sell for $.10 each. Johnny buys 10000 for a prank. He gets a 30% discount for buying in such large bulk. How much does he pay?