Question

Jen Murphy’s average monthly expenditure for forcieris was $169.40 for the first quarter this year. In April she spent 201.35 and in May she spent 158.10 how much can she spend in June and maintain the average of the first quarter ?
A.) 160.61

B.) 123.45

C.) 148.75

D.) 153.81

Answer 1

Given that the average expenditure of 3 months is $169.40.

In April, Jen spent = $ 201.35

In May, she spent = $ 158.10

Let she spent in June =$x

Then, the average monthly expenditure of these three months is given by:

$\frac{201.35+158.10+x}{3}=169.40\\ \\201.35+158.10+x=169.40*3\\\\201.35+158.10+x=508.2\\\\359.45+x=508.2\\\\x=508.2-359.45\\\\x=148.78$

So, she can spend $148.75 in June and still maintain the average expenditure.