Question

Rob rented a bike from Ming's Bikes. It cost $11 plus $8 per hour. If Rob paid $51 then he rented the bike for how many hours?

Answer 1

Rob rented the bike for `5` hours.

Explanation:

If we consider the number of hours that Rob rented the bike as `x` then we can write an equation:

`8x+11=51`

Subtract `11` from each side.

`8x=40`

Divide both sides by `8`.

`x=5`