Question

You can rent time on computers at the local copy center for a $7 setup charge and an additional $4 for every 5 minutes. How much time can you rent for $16

Answer 1

11.25 minutes

Explanation:

Let x = number of 5 minute portions

7 + 4x = 16

⇒ 4x = 9

⇒ x = 2.25

So 2.25 x 5 = 11.25 minutes