Question

Jamail and Wanda sell home theater systems. Jamail earns a base salary of $2400 per month, plus $100 for each system he sells. Wanda earns a base salary of $2200 per month, plus $120 for each system she sells. How many systems do Jamail and Wanda have to sell before they earn the same amount of money?

Answer 1

Let J = amount Jamail earns, W = amount Wanda earns, x=number of computer systems sold.\[J=2400+100x\]\[W=2200+120x\]To find out how many computer systems they have to sell in order to make the same amount of money we set J = W.\[2400+100x=2200+120x\]Solve for x.