[Question]: John chops down 30 trees. From each tree, he can make 25 planks. A table takes 15 planks to make and sells for $300. He paid $3000 for all the labor. How much profit did he make?
[Answer]: He got 30 * 25 = 750 planks. So he can make 750 / 15 = 50 tables. That means he makes 50 * 300 = $15000. So his profit was 15000 - 3000 = $12000.
So the answer is 12000.

[Question]: Mary wants to bake 10 apple pies for a charity event. Each pie needs 8 apples and she already harvested 50 apples from the trees in her garden. How many more apples does she need to buy to make all 10 pies?
[Answer]: She needs 10 * 8 = 80 apples to make the pies. So she has to buy 80 - 50 = 30 more apples.
So the answer is 30.

[Question]: There are 3 boxes of cereal. One box holds 14 ounces of cereal. Another box holds half the amount of the first box and 5 ounces less than the third box. How much cereal is there in all 3 cereal boxes?
[Answer]:
First = 14 oz. Second = (1 / 2) * 14 = 7 oz. Third = 7 + 5 = 12 oz. 14 + 7 + 12 = 33 oz. There are 33 ounces of cereal in those 3 boxes.
So the answer is 33.