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Class results

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Manager
Joined: 29 Apr 2003
Posts: 93

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Location: Singapore

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30 Nov 2003, 16:35
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

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

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Senior Manager
Joined: 05 May 2003
Posts: 424

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Location: Aus

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30 Nov 2003, 16:46
No, I am not able to find.

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Director
Joined: 13 Nov 2003
Posts: 958

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Location: Florida

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30 Nov 2003, 17:17
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

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30 Nov 2003, 17:17
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