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Of the 800 employees of company X, 70% have been with the

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Of the 800 employees of company X, 70% have been with the [#permalink] New post 23 Sep 2006, 15:08
Of the 800 employees of company X, 70% have been with the company for at least 10 years. If y of these 'long-term' members were to retire and no other employee changes were to occur, what value of Y would reduce the percent of 'long term' employees in the company to 60%?

A) 200
B) 160
C) 112
D) 80
E) 56
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 [#permalink] New post 23 Sep 2006, 17:08
80 unless I am missing something
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 [#permalink] New post 23 Sep 2006, 17:12
D) 80

800(0.7)=560

(560-Y)/800=0.6 --> Y=80
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 [#permalink] New post 23 Sep 2006, 21:59
This is exactly why I posted this question...I got 80 too..but.....

80 is wrong. The OA is 200..

Can anyone explain?
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 [#permalink] New post 23 Sep 2006, 23:02
I backsolved this one and got 200. 80 yields 66% long term employees - 480/720 = 66.6%. 200 yields 60% 360/600.
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 [#permalink] New post 23 Sep 2006, 23:05
X & Y, denominator should be (800-Y)...must take into account reduction in total number...
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 [#permalink] New post 24 Sep 2006, 00:28
Of the 800 employees of company X, 70% have been with the company for at least 10 years. If y of these 'long-term' members were to retire and no other employee changes were to occur, what value of Y would reduce the percent of 'long term' employees in the company to 60%?

A) 200 B) 160 C) 112 D) 80 E) 56

560 long timers ...

retired members = y , long timers after retirmemnt of y = 560-y

total employees AFTER RETIRMENT OF Y = 800-y


560-y / 800-y = 0.6

560-y = 480-0.6y thus

80 = 0.4y

thus y = 200

my answer is A
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 [#permalink] New post 24 Sep 2006, 05:10
yezz wrote:
Of the 800 employees of company X, 70% have been with the company for at least 10 years. If y of these 'long-term' members were to retire and no other employee changes were to occur, what value of Y would reduce the percent of 'long term' employees in the company to 60%?

A) 200 B) 160 C) 112 D) 80 E) 56

560 long timers ...

retired members = y , long timers after retirmemnt of y = 560-y

total employees AFTER RETIRMENT OF Y = 800-y


560-y / 800-y = 0.6

560-y = 480-0.6y thus

80 = 0.4y

thus y = 200

my answer is A


I get it now :oops:
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 [#permalink] New post 24 Sep 2006, 09:15
You are right diegmat.
I can afford to have these mistakes during the real thing. :stab
Thanks..
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 [#permalink] New post 24 Sep 2006, 09:42
800*.7 - 800*.6= 80. D.
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 [#permalink] New post 24 Sep 2006, 11:37
X & Y - i have seen your other posts - you got skillz to compensate for one little error - believe me.
  [#permalink] 24 Sep 2006, 11:37
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