Catering business

Montealegre family has a catering business. At one birthday party, they charged their costumer 11,767.50 for a party of 90 persons and a service charge of $ 2,500.50. How much was the average cost per person? Please show your solution.

Correct answer:

a =  158.5333

Step-by-step explanation:

$a={\displaystyle \frac{11767.50+2500.50}{90}}={\displaystyle \frac{2378}{15}}=158\frac{8}{15}=158.5333$

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