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Each employee on a certain task force is either a manager

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alumanau
 Post subject: Re: Each employee on a certain task force is either a manager
 Post Posted: Fri Nov 18, 2011 9:30 pm 
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Students


Posts: 1
Ron, how do you know that the average is a weighted average in this case? The problem states "average" and I believe the reciprocity formula works for weighted average? Help, please!! I'm taking my test on Monday. Thanks so much!!
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RonPurewal
 Post subject: Re: Each employee on a certain task force is either a manager
 Post Posted: Wed Nov 23, 2011 6:47 am 
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ManhattanGMAT Staff


Posts: 7146
alumanau wrote:
Ron, how do you know that the average is a weighted average in this case? The problem states "average" and I believe the reciprocity formula works for weighted average? Help, please!! I'm taking my test on Monday. Thanks so much!!


any time you have N number of one thing and M number of another thing, and you take the average, that's a "weighted average".

what is a "reciprocity formula"?
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