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ds: Word problem

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Senior Manager
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Joined: 22 Jun 2005
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ds: Word problem [#permalink] New post 29 Apr 2006, 06:51
00:00
A
B
C
D
E

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(N/A)

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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
In 1995 Division A of Company X had 4850 customers. If there were 85 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 customer.
2, In 1995 Division B had 9350 customers, none of whom were customers of Division A.
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 [#permalink] New post 30 Apr 2006, 14:15
Service error rate in div A=86/4850 *100=1.77

statement 1:
Combined Service Error rate=1.5 but no mention of total number of Customers or the number of customer in Div B. Insufficient.

Statement2:
No. of Customers=9350 in Div B but no mention of Service errors so not possible to find no. of errors per 100 customers. Insufficient.

Combining Both the statements,
Total no. of customers=9350+4850=14200
Service error/100 customer= 1.5
Total no. of service error=1.5*14200/100
=213
Service error in B=213-86=127
service error/100 customer in B = (127/9350) *100
=1.35(ANS)(C)
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 [#permalink] New post 02 May 2006, 05:29
Agree with C :wink:
  [#permalink] 02 May 2006, 05:29
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