Question

Oceanside Bike Rental Shop charges a 18 dollar fixed fee plus 7 dollars an hour for renting bike. Jason paid 81 dollars to rent a bike. How many hours did he pay to have the bike check out?

Answer 1

9 hours.

Explanation:

Let x represent number of hours.

We have been given that Oceanside Bike Rental Shop charges a 18 dollar fixed fee plus 7 dollars an hour for renting bike.

The cost of renting bike for x hours would be
`7x`.

The total cost of renting bike for x hours would be cost of x hours plus fixed charges that
`7x+18`.

We are told that Jason paid 81 dollars to rent a bike. To find the number of hours, we will equate total cost of renting bike for x hours by 81 as:

`7x+18=81`

Let us solve for x.

`7x+18-18=81-18`

`7x=63`

`(7x)/(7)=(63)/(7)`

`x=9`

Therefore, Jason paid for 9 hours to have the bike check out.