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# Each employee on a certain task force is either a manager or

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Senior Manager
Joined: 11 Feb 2007
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Each employee on a certain task force is either a manager or [#permalink]

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29 Apr 2007, 03:01
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Each employee on a certain task force is either a manager or a director. What percent of employees on the task force are directors?

(1) The average (arithmetic mean) salary of the managers on the task force is $5,000 less than the average salary of all employees on the task force. (2) The average (arithmetic mean) salary of the directors on the task force is$15,000 greater than the average salary of all employees on the task force.

Director
Joined: 29 Aug 2005
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29 Apr 2007, 07:52
is it C?

M(X-5000)+D(X+15000)=(M+D)X

D/M =1/3

D/(M+D) =1/4

Sorry for being too brief....taking test a lot sooner than you
Senior Manager
Joined: 11 Feb 2007
Posts: 352
Followers: 1

Kudos [?]: 113 [0], given: 0

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30 Apr 2007, 01:47
Thank you botirvoy!

The OA is indeed C.

Yes, now I see why it's C.

Best of luck on your test.
I hope to see a 700+ review from you!

(I'm taking it in 4 days! )
Director
Joined: 29 Aug 2005
Posts: 877
Followers: 9

Kudos [?]: 342 [0], given: 7

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30 Apr 2007, 02:07
thanks kevin!

Good luck to me for tomorrow ! I am going to kick GMAT's %\$^Â£ ..

and Good luck to you
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