Write a system of equations to solve- Kay sells athletic shoes aat a store. She can either earn $500 per month plus 4% commission on her tial sales, or $400 per month plus a 5% commission on total sales.
then B. What is the total price of the athletic shoes she needs to sell to earn the same income from each pay scale?
500 + 0.04S = 400 + 0.05S,
Solve for S and get:
S = $10000.