Description
Suppose you are starting an office-cleaning service. You have spent $315 on equipment. To clean an office, you use $4 worth of supplies. You charge $25 per office. How many offices must you clean to break even?
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Explanation & Answer
To clean one office $4 cost.
you charge $25 for one office.
you get the $21 for one office.
you spent $315.
Number office to be clean to break even = 315/21 = 15
15 office has to be clean up to break even
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