On Monday, Mack writes 60 / 30 = 2 pages. On Tuesday, Mack writes 45 / 15 = 3 pages. In total, from Monday to Wednesday, Mack writes 2 + 3 + 5 = 10 pages.
The answer: 10
Reverse engineering the question: On Monday, Mack writes in his journal for 60 minutes at a rate of 1 page every 30 minutes. On Tuesday, Mack writes in his journal for 45 minutes at a rate of 1 page every 15 minutes. On Wednesday, Mack writes 5 pages in his journal. How many pages total does Mack write in his journal from Monday to Wednesday?


Reasoning and answer: The first spacecraft flew for 30 minutes, or 30 / 60 = 1 / 2 hour. The second spacecraft flew for 30 + 30 = 60 minutes, or 1 hour. Thus the first spacecraft traveled at a speed of 448 miles in 1 / 2 hour, or 448 / (1 / 2) = 896 miles per hour. The second spacecraft traveled 448 miles in 1 hour, or 448 / 1 = 448 miles per hour. The difference in speed, in miles per hour, between the two spacecraft was 896 - 448 = 448 miles per hour.
The answer: 448
What was the question?
Question: Two alien spacecraft on a sightseeing tour of Earth left New Orleans airport at 3:00 pm to travel the 448-mile distance to Dallas by air. Traveling nonstop, the first spacecraft landed in Dallas at 3:30 pm, while the second spacecraft landed in Dallas thirty minutes later. Assuming both spacecraft traveled at constant speed, what was the difference in speed, in miles per hour, between the two spacecraft?


He walks 1.5 miles in the morning and 1.5 miles in the evening so that’s 1.5 + 1.5 = 3 miles. If he walks 3 miles everyday, for 30 days then he walks 3 * 30 = 90 miles in 30 days.
The answer: 90
Reverse engineering the question: If Clover goes for a 1.5-mile walk in the morning and another 1.5-mile walk in the evening, every day, how many miles does he walk in 30 days?


Reasoning and answer: The total amount of money that she lost is $400 + $500 = $900. If she remained with $900, she initially had $900 + $800 = $1700.
The answer: 1700
What was the question?
Question: Noemi lost $400 on roulette and $500 on blackjack. How much money did Noemi begin with if she still had $800 in her purse?


The cost of the films is 9 × $5 = $45. The cost of the books is 4 × $4 = $16. The cost of the CDs is 6 × $3 = $18. Josh spent $45 + $16 + $18 = $79 in total.
The answer: 79
Reverse engineering the question: Josh went to the shopping center. He bought 9 films and 4 books. He also bought 6 CDs. Each film cost $5, each book cost $4 and each CD cost $3. How much did Josh spend in all?


If Washington has 140 goats, Washington has 140 + 40 = 180 goats. In total, they have 140 + 180 = 320 goats.
The answer: 320
Reverse engineering the question:
Paddington has 40 more goats than Washington. If Washington has 140 goats, how many goats do they have in total?