DS-Aithmetic Mean : DS Archive
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# DS-Aithmetic Mean

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Director
Joined: 03 Sep 2006
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24 Jun 2007, 20:00
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Pl. exp.
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Director
Joined: 03 Sep 2006
Posts: 879
Followers: 6

Kudos [?]: 772 [0], given: 33

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24 Jun 2007, 20:19
Himalayan wrote:
LM wrote:
Pl. exp.

Could you please show the equations with corresponding equations?
Director
Joined: 26 Feb 2006
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25 Jun 2007, 06:48
LM wrote:
Himalayan wrote:
LM wrote:
Pl. exp.

Could you please show the equations with corresponding equations?

managers = m
managers' avg salary = x

directors = d
directors avg salary = y

from 1:
x + 5000 = (xm+dy) / (m+d)
y - x = 5000(m+d)/d

from 2:
y - 15000 = (xm+dy) / (m+d)
y - x = 15000(m+d)/m

from 1 and 2:
5000 (m+d)/d = 15000 (m+d)/m
m = 3d

so C
Re: DS-Aithmetic Mean   [#permalink] 25 Jun 2007, 06:48
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