A bicycle store costs $1500 per month to operate. The store pays an average of $60 per bike. The ave

[math_celebrity]

A bicycle store costs $1500 per month to operate. The store pays an average of $60 per bike. The average selling price of each bicycle is $80. How many bicycles must the store sell each month to break even?

Profit = Revenue - Cost

Let the number of bikes be b.
Revenue = 80b
Cost = 60b + 1500

Break even is when profit equals 0, which means revenue equals cost. Set them equal to each other:
60b + 1500 = 80b

We type this equation into our search engine and we get:
b = 75