HELP

Checking account A charges a monthly fee of $7 and a per-check fee of $0.20, and checking account B charges a monthly fee of $8 and a per-check fee of $0.15. How many checks would a person have to write for the two accounts to cost the same?

Question

HELP

Checking account A charges a monthly fee of $7 and a per-check fee of $0.20, and checking account B charges a monthly fee of $8 and a per-check fee of $0.15. How many checks would a person have to write for the two accounts to cost the same?

mathstudent55 · Answer

Call the number of checks x.

Since for account A, each check cost $0.20, x checks cost 0.20x.
For account B, the cost of x checks is 0.15x.

The total cost for account A is 7 + 0.2x
The total cost for account B is 8 + 0.15x

Set the costs equal to each other, and solve for x.