First, we need to determine the length of John's workday if he decides to earn the bonus. We do this by performing 8 + 2 = 10 hours for his workday. Next, we need to determine his overall pay. We do this by performing 80 + 20 = 100 dollars a day. We then determine John's hourly rate by dividing his pay by the number of hours worked, performing 100 / 10 = 10 dollars an hour.
The answer: 10
Reverse engineering the question: John works a job that offers performance bonuses. He makes $80 a day and works for 8 hours. He has the option of working hard to earn the performance bonus of an extra $20 a day, but the extra effort results in a 2-hour longer workday. How much does John make per hour if he decides to earn the bonus?


Reasoning and answer: If each battery charge costs $3.5, the total expense of 4 battery charges is 4 * 3.5 = $14. After his expense on battery charging, his balance was 20 - 14 = $6.
The answer: 6
What was the question?
Question: Hawkeye is driving to his aunt. He has to charge his battery for $3.5 per charge. If he charged his battery four times, and his battery charging budget was $20, how much money was he left with when he reached his aunt's place?


He gets 12 * 5000 = $60000 for the first 12 hours. For the next 14 hours, he gets 5000 * .2 = $1000 more per hour. So he gets 5000 + 1000 = $6000 per hour. So he gets 6000 * 14 = $84000. So in total, he makes 84000 + 60000 = $144,000.
The answer: 144000
Reverse engineering the question: John runs a telethon to raise money. For the first 12 hours, he generates $5000 per hour. The remaining 14 hours, he generates 20% more per hour. How much total money does he make?


Reasoning and answer: Friends = 41 * 2 = 82. Johann = 180 - 82 = 98. Johann must deliver 98 pieces of mail.
The answer: 98
What was the question?
Question: Johann and two friends are to deliver 180 pieces of certified mail. His friends each deliver 41 pieces of mail. How many pieces of mail does Johann need to deliver?


They ate a total of 4 x 2 = 8 pieces of candy after the event. So, Travis and his brother have 68 - 8 = 60 pieces of candy left.
The answer: 60
Reverse engineering the question: Travis and his brother joined a trick-or-treat event. They collected 68 pieces of candy altogether. Each of them ate 4 pieces of candy after the event. How many pieces of candy were left?


The second earthquake caused 2 * 4 = 8 buildings to collapse. The third earthquake caused 2 * 8 = 16 buildings to collapse. The fourth earthquake caused 16 * 2 = 32 buildings to collapse. Including the first earthquake, the earthquakes caused 4 + 8 + 16 + 32 = 60 buildings to collapse.
The answer: 60
Reverse engineering the question:
An earthquake caused four buildings to collapse. Experts predicted that each following earthquake would have double the number of collapsing buildings as the previous one, since each one would make the foundations less stable. After three more earthquakes, how many buildings had collapsed including those from the first earthquake?