SOLUTION: Suppose you are starting an office-claning service. You have spent $315 on equipment. To clean the office you use $4 worth of supp;ies. You charge $25. How many offices must you cl

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Question 1842: Suppose you are starting an office-claning service. You have spent $315 on equipment. To clean the office you use $4 worth of supp;ies. You charge $25. How many offices must you clean to break even?
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
you need to earn $315 to break even.
Every office you clean gives you (25-4) = $21 profit.
So you need to clean (315/21) offices. This is 15.
Jon