A bicycle store costs $2400 per month to operate. The store pays an average of $60 per bike. The average selling price of each bicycle is $120.
How many bicycles must the store sell each month to break even?
Write a system of equations to represent the situation, then solve.
x (120 - 60) = 2400
but in general
cost = 2400 + 60 x
revenue = 120 x
so
profit = 120 x - (2400+ 60 x)
so for profit = 0
2400 = (120 - 60)x again ;)