Answer the following question.
The sum of Cooper's, Dante's, and Maria's ages is 31. Dante is twice as old as Cooper. Maria is one year older than Dante. How old is Cooper?
Step-by-step reasoning process: Let X be the age of Cooper. So Dante is X * 2 years old and Maria is X * 2 + 1 year old. The sum of Cooper's, Dante's, and Maria's ages is X + (X * 2) + (X * 2 + 1) = 31. Combining like terms, we get X * 5 + 1 = 31. Subtracting one from both sides, we get X * 5 = 30. Dividing both sides by 5, we get X = 6 years old.
The answer is 6.

Answer the following question.
Jackson spends 9 hours playing video games and 1/3 that much time studying. If Jackson's grade starts at 0 points and increases by 15 points for every hour he spends studying, what is his grade?
Step-by-step reasoning process: First find how many hours he spends studying by dividing the number of hours spent gaming by 3: 9 hours / 3 = 3 hours. Then multiply that quantity by the point increase per hour to find Jackson's grade: 3 hours * 15 points / hour = 45 points.
The answer is 45.

Answer the following question.
It rained twice as much on Tuesday as Monday. On Monday it rained 3 inches more than Sunday. It rained 4 inches on Sunday. How much total rainfall was there over the 3 days?
Step-by-step reasoning process: It rained 3 + 4 = 7 inches on Monday. So it rained 7 * 2 = 14 inches on Tuesday. That means the total rainfall was 7 + 14 + 4 = 25 inches.
The answer is 25.

Answer the following 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?
Step-by-step reasoning process: 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 is 16.