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Re: Average.GmatPrep.Mean of salary [#permalink]
30 Mar 2010, 22:00

divakarbio7 wrote:

we can solve this question using weighted averages. The formula we use in weighted average is N1 / N2 = D2 / D1 ................................................ Hope this will help..correct me if my reasoning is wrong!!!!!

Wow, that was pretty cool.

I have just forgotten this formula of weighted average - N1/N2 = D2/D1. I can't seem to recollect it. Can you please shed some more light on it ? Like, what is N1, N2, & how it works ?

Re: Average.GmatPrep.Mean of salary [#permalink]
30 Mar 2010, 22:24

Hi,

you can get more information about weighted average in Manhattan Book 5 - word translations - chapter 6. For your reference i have attached the chapters.... ( refer weighted average 1 & 2 )

Attachments

Weighted Avergae2.gif [ 51.88 KiB | Viewed 1311 times ]

Weighted Avergae1.gif [ 50.48 KiB | Viewed 1309 times ]

Re: Average.GmatPrep.Mean of salary [#permalink]
31 Mar 2010, 01:11

@ divakarbio7

Thanks for your fantastic efforts. I still have some doubts if you can clear.

Let say the average salary is x, then managers salary is x-5000 and directors is x+15000

now you have taken the ratio of 15000 to 5000. now lets assume the managers salary is x+5000 in statement 1 (managers earn 5000 more than the average) and directors earn same x+15000. Then what would be the answer?

Can you please mention the formula with explanation. That would be very helpful!

Re: Average.GmatPrep.Mean of salary [#permalink]
01 Apr 2010, 03:03

hi

if we assume the average salary of Manager is 5000+, & as given Directors will be 15000+, then as per my knowledge we cannot use the weighted average formula. However I am not sure as to how to solve your questions. sorry....

you can also refer below URL, where the same problem is solved in different approach gmat-prep-test-92076.html

Re: Average.GmatPrep.Mean of salary [#permalink]
01 Apr 2010, 03:32

divakarbio7 wrote:

hi

if we assume the average salary of Manager is 5000+, & as given Directors will be 15000+, then as per my knowledge we cannot use the weighted average formula. However I am not sure as to how to solve your questions. sorry....

you can also refer below URL, where the same problem is solved in different approach gmat-prep-test-92076.html

i got the solution i wanted on the link. Thanks again _________________

Success is my Destiny

gmatclubot

Re: Average.GmatPrep.Mean of salary
[#permalink]
01 Apr 2010, 03:32