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A boy's club, which is trying to raise money by having...

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A boy's club, which is trying to raise money by having...

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A boy's club, which is trying to raise money by having a car wash, can wash 100 cars if they work for 8 hours, without a break. A girl's club is also going to have a car wash, if the members of the girl's club wash 5 cars per hour, how many more cars per hour does the boy's club wash?

A. 1.15
B. 1.25
C. 3.5
D. 6.25
E. 7.5

The OA is E.

I don't have clear this PS question or I'm not sure. I think that it's an easy question.

I just need to determine how many cars per hour the boy's club can wash, right? It will be 100/8 = 12.5.

Then I need to make the substract of 12.5 - 5 = 7.5, right?

That's all? Thank you so much!

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GMAT/MBA Expert

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AAPL wrote:
A boy's club, which is trying to raise money by having a car wash, can wash 100 cars if they work for 8 hours, without a break. A girl's club is also going to have a car wash, if the members of the girl's club wash 5 cars per hour, how many more cars per hour does the boy's club wash?

A. 1.15
B. 1.25
C. 3.5
D. 6.25
E. 7.5

The OA is E.

I don't have clear this PS question or I'm not sure. I think that it's an easy question.

I just need to determine how many cars per hour the boy's club can wash, right? It will be 100/8 = 12.5.

Then I need to make the substract of 12.5 - 5 = 7.5, right?

That's all? Thank you so much!
Hi AAPL,

Yes. You have used the correct logic.
Perfectly worked out.

_________________
GMAT Prep From The Economist
We offer 70+ point score improvement money back guarantee.
Our average student improves 98 points.

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GMAT/MBA Expert

Post
AAPL wrote:
A boy's club, which is trying to raise money by having a car wash, can wash 100 cars if they work for 8 hours, without a break. A girl's club is also going to have a car wash, if the members of the girl's club wash 5 cars per hour, how many more cars per hour does the boy's club wash?

A. 1.15
B. 1.25
C. 3.5
D. 6.25
E. 7.5
If the boys can wash 100 cars in 8 hours, then they can wash 100/8 = 12.5 cars per hour. Since the girls can wash 5 cars per hour, the difference is:

12.5 - 5 = 7.5

The boys wash 7.5 more cars per hour than the girls do.

Answer: E

_________________

Jeffrey Miller
Head of GMAT Instruction
jeff@targettestprep.com



See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews

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