Sam’s swimming pool cleaning has an annual gross profit of $88,400. sam charges $25 per week for each of his customers for 52 weeks. his annual operating expenses, including labor and supplies, are $48,000. how many customers does sam’s swimming pool cleaning have?
a.
17
b.
35
c.
68
d.
105
the answer is c

To get how many customers Sam has, write an equation that will relate to the gross profit. Let n be the customers. Since for 52 weeks, Sam charges $25 per week per person, multiply n by the number of weeks and the charge. The equation is written as $88,400 = 52 weeks x $25 per week x n persons. Divide $88,400 by the product of 52 weeks and the $25 charge. The answer will be 68. The annual operating expense $48,000 is just there to make confusion. 

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