Answer the following question.
Mabel is counting sharks in the ocean. She knows that of the fish that she sees, 25% will be sharks and 75% will be another type of fish. On day one she counts 15 fish. On day 2 she counts three times as many. How many sharks did she count over those two days?
Step-by-step reasoning process: She counts 45 fish on day 2 because 3 x 15 = 45. She counts 60 fish in total because 15 + 45 = 60. She counts 15 sharks because 60 x .25 = 15.
The answer is 15.

Answer the following question.
Tina's classroom has the same amount of students as Maura's. Zack's classroom has half the amount of total students between Tina and Maura's classrooms. How many students are there in total between the 3 classrooms if when Zack was sick there were 22 students in his class?
Step-by-step reasoning process: If Zack's classroom had 22 students when he was absent, then the total students in his class are 22 + 1 = 23. If Tina's classroom has as many students as Maura's then T = M. If Zack's classroom has half the amount of total students between Tina and Maura's classrooms then 23 = 1 / 2 * (T + M ). 23 = 1 / 2 * (T + M). We know from above that T = M, therefore 23 = (1 / 2) * (M + M) or 23 = (1 / 2) * 2M. 23 = M. Because T = M, then T is also T = 23. Between the three classes then we have a total of T + M + Z or 23 + 23 + 23 = 69.
The answer is 69.

Answer the following question.
Loris needs three more books to have the same number as Lamont, who has twice the number of books Darryl has. If Darryl has 20 books, calculate the total number of books the three have.
Step-by-step reasoning process: Since Darryl has 20 books, Lamont, who has twice the number of books Darryl has, has 20 * 2 = 40 books. The total number of books both Darryl and Lamont has is 40 + 20 = 60 books. To have the same number of books as Lamont, Loris needs 3 more books, meaning she has 40 - 3 = 37 books. In total, the three has 60 + 37 = 97 books.
The answer is 97.

Answer the following question.
The difference between the number of boys and girls in a tree planting event is 400. If there are 600 boys at the event, and the number of girls is more than the number of boys, what's 60% of the total number of boys and girls at the event?
Step-by-step reasoning process: If there are 600 boys at the event, and the difference between boys and girls is 400, there are 600 + 400 = 1000 girls. The total number of boys and girls at the event is 1000 + 600 = 1600. 60% of the total number of boys and girls at the event is 60 / 100 * 1600 = 960.
The answer is 960.