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# In a certain office, 50 percent of the employees are college

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GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4288
In a certain office, 50 percent of the employees are college [#permalink]

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17 Sep 2004, 21:14
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In a certain office, 50 percent of the employees are college graduates and 60 percent of the employees are over 40 years old. If 30 percent of those over 40 have master's degrees, how many of the employees over forty have master's degrees?

1- Exactly 100 of the employees are college graduates
2- Of the employees forty years old or less, 25 percent have master's degrees
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Best Regards,

Paul

Director
Joined: 16 Jun 2004
Posts: 891

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17 Sep 2004, 21:51
I am trying to answer this with utmost speed...so I could be doing mistakes..

1.Sufficient.100 CG's. =>200 employess=> net net 36 MD's over 40
2.Insufficient. Cant get a firm number here.

Ans. A.
Manager
Joined: 29 Jul 2004
Posts: 67

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17 Sep 2004, 21:52
Quick guess - A

1. Gives a hard #

2. Only % - so total or any part thereof not known

For 1... [.3 * .6 * (200) = 36] - since 50% of employees who are college grads are 100 ... so total employees = 200

Correct me if I am wrong
Director
Joined: 31 Aug 2004
Posts: 606

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18 Sep 2004, 10:40
I remember this one... from the ets paper tests ?

I choose A too.

CR : I think it assumes that employees are college graduates OR hold a MD

2 months ago I answered E taking this lack into account...
Director
Joined: 20 Jul 2004
Posts: 592

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18 Sep 2004, 10:51
A.

Statement II is useless since there is no number. Nevertheless, note that all college students in that company are not masters.
GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4288

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20 Sep 2004, 16:02
sorry for the late answer here. OA is A. I put down E but what do you think about the quality of this question? It is indeed from ETS paper test. What I don't like is that it is indeed some CR question in that you have to assume that master's degree workers ARE college graduates. I though that college was equivalent to high school. This is an easy question in and of itself but this assumption makes it unworthy of a good-quality GMAT question...
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Best Regards,

Paul

Manager
Joined: 26 Aug 2004
Posts: 54

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21 Sep 2004, 09:42
even with that assumption, i don't see how anything could possibly be determined without a number such as the one given in answer A.
Intern
Joined: 16 Sep 2004
Posts: 3

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21 Sep 2004, 11:53
In a certain office, 50 percent of the employees are college graduates and 60 percent of the employees are over 40 years old. If 30 percent of those over 40 have master's degrees, how many of the employees over forty have master's degrees?

1- Exactly 100 of the employees are college graduates
2- Of the employees forty years old or less, 25 percent have master's degrees

Statement 1 is sufficient.

My answer assumes that all employees with a masters degree are also college graduates. Using a grid to analyze this problem is helpful. Please see the attached spreadsheet.
Attachments

CR question.xls [15 KiB]

21 Sep 2004, 11:53
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