David estimates that he will have expenses totaling $24,870 for one year of college. He will receive $7,560 in grants. How much will David have to contribute each semester during this year?

The answer is $8,655.

We will deduct the grant of $7,560 from his total expenses of $24,870 so we will get $17,310 which is the amount he has to contribute per year. Since there are two semesters in a year, we will divide this amount by 2 and we will get $8,655 which is the amount he has to contribute for one semester.

Expenses : $24,870

Grant : $ (7,560)

$ 17,310

# of sem : 2

$ 8,655