Reasoning and answer: The first 15 - minute chain pull caused the balloon to rise 50 * 15 = 750 feet. Releasing the chain for 10 minutes caused the balloon to descend 10 * 10 = 100 feet. The second 15 - minute chain pull caused the balloon to rise another 50 * 15 = 750 feet. Thus, at the end of the second chain pull, when the balloon was at its highest elevation, the balloon had risen to an elevation of 750 - 100 + 750 = 1400 feet above the earth's surface.
The answer: 1400
What was the question?
Question: Jo-Bob hopped into the hot air balloon, released the anchor rope, and pulled on the lift chain, which ignited the flame and provided the warm air that caused the balloon to rise. When the lift chain was pulled, the balloon would rise at a rate of 50 feet per minute. But when the chain was not being pulled, the balloon would slowly descend at a rate of 10 feet per minute. During his balloon ride, he pulled the chain for 15 minutes, then released the rope for 10 minutes, then pulled the chain for another 15 minutes, and finally released the chain and allowed the balloon to slowly descend back to the earth. During his balloon ride, what was the highest elevation reached by the balloon?


Let's say the number of books she had in the first week is x. After six weeks, Tracy has x + x * 10 = 99 books. Combining like terms, we get 11x = 99. Dividing both sides by 11, we find that the number of books Tracy had in the first week is x = 9.
The answer: 9
Reverse engineering the question: Tracy has been collecting novels from her friends to donate to the Children For The Future charity organization. In the first week she collects a certain number of books. In the next five weeks, she collects ten times as many books as she did in the first week. How many books did she collect in the first week if she has 99 books now?


Reasoning and answer: Jared's friends can eat a total of 60 x 3 = 180 pieces of popcorn. Jared and his three friends can eat a total of 180 + 90 = 270 pieces of popcorn. Therefore, Jared should order 270 / 30 = 9 servings of popcorn.
The answer: 9
What was the question?
Question: There are 30 pieces of popcorn in a serving. Jared can eat 90 pieces of popcorn and his three other friends can each eat 60 pieces of popcorn. How many servings of popcorn should Jared order for all of them?


The Kickers scored twice as many as 2 goals in the second period, so 2 * 2 = 4 goals. The Spiders scored half as many as The Kickers' 2 goals from the 1st period so .5 * 2 = 1 goal in the first period. The Spiders scored twice as many as The Kickers' 4 goals from the second period, so 2 * 4 = 8 goals in the second period. Together, they scored 2 + 4 + 1 + 8 = 15 goals total.
The answer: 15
Reverse engineering the question: During the soccer match, The Kickers scored 2 goals in the first period and twice that amount in the second period. The other team, The Spiders, scored half the amount that The Kickers scored in the first period and twice the amount that The Kickers scored in their second period. What is the total amount of goals both teams scored?


Reasoning and answer: Each month she makes 20 + 40 = $60. Every month she saves 60 / 2 = $30. To save $150 it will take her 150 / 30 = 5 months.
The answer: 5
What was the question?
Question: Mary earns $20 washing cars and $40 walking dogs each month. If she puts half of that money away each month how long would it take her to save $150?


Reasoning and answer: Britney has 11 * 2 = 22 Rhode Island Reds. She has 6 / 2 = 3 Golden Comets. She has 22 + 3 = 25 total. Susie has 11 + 6 = 17 total. Britney has 25 - 17 = 8 more.
The answer: 8
What was the question?
Question:
Susie and Britney each keep chickens, of two different breeds. Susie has 11 Rhode Island Reds and 6 Golden Comets. Britney has twice as many Rhode Island Reds as Susie, but only half as many Golden Comets. How many more chickens are in Britney's flock than in Susie's?