The total number of scoops of ice cream that Mary has is 3 cartons * 10 scoops = 30 scoops of ice cream. Lucas, Danny and Connor will eat 2 scoops * 3 people = 6 scoops of ice cream. Shannon will eat 2 * (1 vanilla + 1 strawberry) = 4 total scoops of ice cream. Combined the kids will eat a total of 2 + 6 + 2 + 4 scoops = 14 scoops of ice cream. Mary will have 30 scoops - 14 scoops = 16 scoops of ice cream remaining.
The answer: 16
Reverse engineering the question: A carton of ice cream contains 10 scoops each. Mary has 3 cartons of ice cream, one chocolate, one strawberry and one vanilla. Ethan wants one scoop of vanilla and one of chocolate. Lucas, Danny and Connor all want 2 scoops of chocolate. Olivia would like a scoop of vanilla and one of strawberry. Shannon wants twice as much as Olivia. How many scoops of ice cream will be left?


Reasoning and answer: Gordon serves 20 x 7 = 140 meals in his first restaurant per week. He serves 40 x 7 = 280 meals in his second restaurant per week. At the third restaurant, he serves 50 x 7 = 350 meals per week. Therefore, he serves 140 + 280 + 350 = 770 meals in total per week.
The answer: 770
What was the question?
Question: Gordon owns 3 restaurants, his first restaurant serves 20 meals, his second restaurant serves 40 meals, and his third restaurant serves 50 meals per day. How many meals do his 3 restaurants serve per week?


There were 1150 - 150 = 1000 people who didn't vote for John. That means James got 1000 * .7 = 700 votes. So the other candidate got 1000 - 700 = 300 votes. This means he got 300 - 150 = 150 more votes than John.
The answer: 150
Reverse engineering the question: 3 people run for president. John manages to capture 150 votes. James captures 70% of the remaining vote. If there were 1150 people voting, how many more votes did the third guy get than John?


Reasoning and answer: The area of the rectangle is 3 x 6 = 18 sq in. The area of the square is 5 x 5 = 25 sq in. The difference is 25 - 18 = 7 sq in.
The answer: 7
What was the question?
Question: A rectangle has a length of 3 inches and a width of 6 inches. A square has a width of 5 inches. What is the difference in area between the two shapes?


Elaine was in the pool for 2 * 3 = 6 minutes. George was in the pool for 6 / 3 = 2 minutes. Kramer never found the pool and thus swam for 0 minutes. In total, Jerry and his friend were in the cold water for 3 + 6 + 2 + 0 = 11 minutes.
The answer: 11
Reverse engineering the question: At the polar bear club, Jerry and his three friends, Elaine, George, and Kramer, took turns jumping into a swimming pool filled with freezing-cold water. Jerry was in the pool for 3 minutes before becoming too cold to remain in the cold water. Elaine stayed in the pool for twice as long as Jerry. George could only stay in the pool for one-third as long as Elaine. And Kramer, who accidentally locked himself in the bathroom, could not find the pool. What is the combined total of minutes that Jerry and his friends were in the cold water?


The amoeba will divide into 1 * 2 = 2 amoebae after 2 days. The amoeba will divide into 2 * 2 = 4 amoebae after 4 days. The amoeba will divide into 4 * 2 = 8 amoebae after 6 days. The amoeba will divide into 8 * 2 = 16 amoebae after 8 days.
The answer: 8
Reverse engineering the question:
An amoeba reproduces by fission, splitting itself into two separate amoebae. An amoeba reproduces every two days. How many days will it take one amoeba to divide into 16 amoebae?