Question

Eric worked 13 hours last week at the library and earned $91.00. If he continues at the same hourly pay, how many more hours must he work to earn an additional $133.00?

Answer 1

19 hours

Calculate his hourly rate by dividing $91 by 13

hourly rate =
`(91)/(13)` = $7

Now divide $133 by 7 to find number of hours he has to work

`(133)/(7)` = 19 hours