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Class results

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Manager
Manager
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Joined: 28 Apr 2003
Posts: 95
Location: Singapore
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Class results [#permalink] New post 30 Nov 2003, 15:35
Question:
Test results for Class A
Average score for the boys: 90
Average score for the girls: 81
Average score for the class: 84

Can we know from the question which is greater?

The number of boys in the class A who took the test or
The number of girls in the class A who took the test?

Tze Wei
Senior Manager
Senior Manager
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Joined: 05 May 2003
Posts: 427
Location: Aus
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 [#permalink] New post 30 Nov 2003, 15:46
No, I am not able to find. :roll:
Director
Director
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Joined: 13 Nov 2003
Posts: 971
Location: Florida
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 [#permalink] New post 30 Nov 2003, 16:17
try this:

(.81G+.84B)/(G+B)=.84
solve:
u will get: B=1/2G ..so u can tell who is in majority. 1:2 gonna be good :wink:
  [#permalink] 30 Nov 2003, 16:17
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