Question

. A salesperson is paid $12 per hour plus $15 for every computer is sold. If she worked 20 hours and made $600, how many computers did she sell?

Answer 1

First you have to multiply 12*20 to get how much money he got by working 20 hrs.
Which equals 240.
Then subtract 600-240 to get the money he got for the computers.
Which equals 360. 
Then divide 360/15
which equals 24
so he sold 24 computers