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Div A, Div B (GPREP)

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ashish.jere
 Post subject: Div A, Div B (GPREP)
 Post Posted: Wed Jul 08, 2009 2:31 pm 
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Students


Posts: 78
In 1995 Division A of Company X had 4 850 customers. if there were 86 service errors in Division A that year, what was the service-error rate, in number of service errors per 100 customers, for Division B of company X in 1995 ?

(1) In 1995, the overall service-error rate for Divisions A and B combined was 1.5 service errors per 100 customers

(2) In 1995 Division B had 9350 customers, none of whom were customers of Division A


From Statement (1)

(86 + x ) / (4850 + B) = 1.5 / 100

Where x = errors in Division B, B = customers in B.

Not Sufficient.

Is the above equation right?


From Statement (2)

We get B. Not Sufficient.


(1) + (2)

x is the only unknown. We can find x and later service errors per 100 customers.
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cfaking
 Post subject: Re: Div A, Div B (GPREP)
 Post Posted: Thu Jul 09, 2009 4:47 am 
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Students


Posts: 39
Location: India
Right Approach


if we calculate further we get x=127

hence OA-C?

_________________
Many of the great achievements of the world were accomplished by tired and discouraged men who kept on working.
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RonPurewal
 Post subject: Re: Div A, Div B (GPREP)
 Post Posted: Fri Jul 10, 2009 7:19 am 
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ManhattanGMAT Staff


Posts: 7146
there is already a GIANT thread on this problem. it can be found here:
in-1995-division-a-of-company-x-had-4-850-customers-t974.html

if you have any further questions, please post them on THAT thread, not this one. thank you.
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ashish.jere
 Post subject: Re: Div A, Div B (GPREP)
 Post Posted: Mon Jul 13, 2009 9:03 am 
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Students


Posts: 78
thanks.
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RonPurewal
 Post subject: Re: Div A, Div B (GPREP)
 Post Posted: Thu Jul 16, 2009 8:25 am 
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ManhattanGMAT Staff


Posts: 7146
ashish.jere wrote:
thanks.


no problem. sometimes the threads are hard to find.
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