Need an equation

Question

It costs $4.25 per game at the bowling alley, plus $1.90 to rent shoes. If I have $20, how many games can I bowl?

Answer 1

1. (20 - 1.9) / 4.25

You only rent shoes once so you want to first subtract that from the total and then that result you divide by 4.25 which is the cost per game to find out how many games you can play