The cost of renting a rototiller is $18.50 for the first hour and $10.95 for each additional hour. How long, to the nearest hour, can a person have the rototiller if the cost must be less than $85?

Question

The cost of renting a rototiller is $18.50 for the first hour and $10.95 for each additional hour. How long, to the nearest hour, can a person have the rototiller if the cost must be less than $85?

Answer 1

Hey Meg.

Lets start with 85-18.50= 66.50

Now you can make an equation

66.50=10.50x

66.50/10.50 10.50x/10.50

6.33333= x

It has to be less than 85 so we need to round down. The nearest hour would be 6 hours. You need to add the first hour back.

So it would be 7 hours in total.