Katie and Holly founded Hokies Plumbing Company after graduating from college. The wanted to be competitive, so they set their rate for house call at a modest $100.00.

After paying the company's gas and other variable cost of $60.00 the women thought that would be enough profit.

They set their salaries at $100,000 each. There was no fixed cost at all.

House calls rate: $100

Variable cost: $60.00

Salaries: $100,000

Calculate the number of house calls that Hokies Plumbing must make to break even?