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In Company X, are more than 1/4 of the employees over 55 years of age?

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In Company X, are more than 1/4 of the employees over 55 years of age?  [#permalink]

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New post 17 Oct 2018, 00:33
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Difficulty:

  15% (low)

Question Stats:

89% (01:14) correct 11% (01:28) wrong based on 48 sessions

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Senior Manager
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Re: In Company X, are more than 1/4 of the employees over 55 years of age?  [#permalink]

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New post 23 Oct 2018, 19:52
are ≥0.25e >55yo

1)f is a subset of e. and, of them means 2/5·40%=16%.
Must be a whole number of people. At a minimum this is 4 females from a total of 25 (as 0.16=16/100=4/25)
Don't know numbers concerning men. Insufficient

2) 20 men are over 55. Don't know total number of men. Don't know numbers concerning females.
Insufficient

Together
Assume all men are over 55

\(\frac{(20+4)}{(20+25)}\)=\(\frac{24}{45}\) which is greater than half, so greater than 0.25

\(\frac{(20+4)}{(9999999+25)}\) is well below 0.25

Insufficient
E
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Re: In Company X, are more than 1/4 of the employees over 55 years of age?   [#permalink] 23 Oct 2018, 19:52
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In Company X, are more than 1/4 of the employees over 55 years of age?

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