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In a corporation, 50 percent of the male employees and 40

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Intern
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Joined: 17 Oct 2008
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In a corporation, 50 percent of the male employees and 40 [#permalink] New post 17 Oct 2008, 10:22
In a corporation, 50 percent of the male employees and 40 percent of the female employees are at least 35 years old. If 42 percent of all the employees are at least 35 years old, what fraction of the employees in the corporation are females?

A. 3/5
B. 2/3
C. 3/4
D. 4/5
E. 5/6
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Re: male & female [#permalink] New post 17 Oct 2008, 11:08
0.5m + 0.4f = 0,42(m+f)
or 4m = f.

Hence, f/(f+m) = 4/5.

Hence, D.
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Re: male & female [#permalink] New post 17 Oct 2008, 11:13
mikegao wrote:
In a corporation, 50 percent of the male employees and 40 percent of the female employees are at least 35 years old. If 42 percent of all the employees are at least 35 years old, what fraction of the employees in the corporation are females?

A. 3/5
B. 2/3
C. 3/4
D. 4/5
E. 5/6


0.5m + 0.f = 0.42 (m+f)
4m = f
so, f/(m+f) = 4/5
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Re: male & female   [#permalink] 17 Oct 2008, 11:13
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In a corporation, 50 percent of the male employees and 40

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