Ravshonbek wrote:

Last September the sales total for a certain car dealership was 400% greater than the average monthly sales total for the other 11 months. The sales total for September was approximately what percent of the year´s sales?

A. 15 %

B. 27%

C. 31%

D. 42%

E. 75%

Let's assign some

nice valuesLast September the sales total for a certain car dealership was 400% greater than the average monthly sales total for the other 11 months.Let's say that the AVERAGE monthly sales for the other 11 months =

$1400% of

$1 = $4

So, September's sales total =

$1 + $4 =

$5So, the YEARLY total sales = (11)(

$1) +

$5 =

$16The sales total for September was approximately what percent of the year´s sales?$5/

$16 = 31.25%

Answer: C

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Brent Hanneson – Founder of gmatprepnow.com