Reasoning and answer: Yvonne swims 10 laps in 5 minutes and her younger sister swims half as many laps in 5 minutes so she swims 10 / 2 = 5 laps in 5 minutes. Joel can swim 3 times the amount of his youngest sister’s 5 laps so he can swim 3 * 5 = 15 laps in 5 minutes.
The answer: 15
What was the question?
Question: Yvonne swims 10 laps in 5 minutes. Her younger sister can swim half as many laps as Yvonne in the same time frame. Their brother Joel can swim three times the number of laps as the youngest sister. How many laps can Joel swim?


Five feet is equal to 5 feet x 12 inches / foot = 60 inches. So, the total length of the wire was 60 inches + 4 inches = 64 inches. Hence, each part is 64 inches / 4 parts = 16 inches / part.
The answer: 16
Reverse engineering the question: A piece of wire 5 feet 4 inches long was divided into 4 equal parts. How long was each part in inches if 1 foot is equal to 12 inches?


Reasoning and answer: Both cakes use 8 egg whites so she would typically use 2 * 8 = 16 egg whites. 2 tablespoons of aquafaba is equivalent to 1 egg white and she needs 16 egg whites to that's 2 * 16 = 32 tablespoons of aquafaba.
The answer: 32
What was the question?
Question: Christine is subbing aquafaba for egg whites in baking. Every 2 tablespoons of aquafaba is equivalent to 1 egg white. She's making 2 angel food cakes that call for 8 egg whites each. How many tablespoons of aquafaba will she need in order not to use egg whites?


On the second day, the executive receives 16 / 2 = 8 new emails. On the third day, he receives 8 / 2 = 4 new emails. On the fourth day, he receives 4 / 2 = 2 new emails. Therefore, during the entire trip he will have received 16 + 8 + 4 + 2 = 30 new emails.
The answer: 30
Reverse engineering the question: A business executive is going on a four day vacation where he will be unable to answer emails. The first day he is gone, he receives 16 new emails. On each of the following days, he receives half as many new emails as he received on the prior day. At the end of his four day vacation, how many new emails will he have received in total?


Reasoning and answer: There were 240 / 10 = 24 pomelos in a box. This means that each box has 24 / 12 = 2 dozens of pomelos since 1 dozen is equal to 12. The farmer shipped a total of 10 + 20 = 30 boxes. Thus, the farmer shipped a total of 30 x 2 = 60 dozens of pomelos.
The answer: 60
What was the question?
Question: Last week, a farmer shipped 10 boxes of pomelos which had 240 pomelos in all. This week, the farmer shipped 20 boxes. How many dozens of pomelos did the farmer ship in all?


Reasoning and answer: Whitney is buying 2 posters for $5 each, so the posters will cost 2 * $5 = $10 total cost for posters. Whitney is buying 3 notebooks for $4 each, so the notebooks will cost 3 * $4 = $12 total cost for notebooks. Whitney is buying 2 notebooks for $2, so the bookmarks 2 * $2 = $4 total cost for bookmarks. Since Whitney is paying $10 for posters, $12 for notebooks, and $4 for bookmarks, her total purchase will cost $10 + $12 + $4 = $26 total purchase cost. Whitney’s mom gave her 2 $20 bills, so she will be paying with 2 * $20 = $40 total payment. Since Whitney is paying with $40 and her purchase cost will be $26, she will have $40 - $26 = $14 left over after the purchase.
The answer: 14
What was the question?
Question:
Whitney’s mom gave her two $20 bills to spend at the school book fair. Whitney has decided to buy 2 posters, 3 notebooks, and 2 bookmarks. Each poster costs $5, each notebook costs $4, and each bookmark costs $2. How much money, in dollars, will Whitney have left over after the purchase?