It is currently 18 Nov 2017, 16:50

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

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

Author Message
TAGS:

### Hide Tags

Manager
Joined: 08 Jul 2009
Posts: 172

Kudos [?]: 90 [0], given: 13

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

### Show Tags

11 Jul 2009, 11:06
4
This post was
BOOKMARKED
00:00

Difficulty:

25% (medium)

Question Stats:

75% (01:34) correct 25% (01:33) wrong based on 235 sessions

### HideShow timer Statistics

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 40 have master's degrees?

(1) Exactly 100 of the employees are college graduates.
(2) Of the employees 40 years old or less, 25 percent have master's degrees.

OPEN DISCUSSION OF THIS QUESTION IS HERE: in-a-certain-office-50-percent-of-the-employees-are-college-143768.html
[Reveal] Spoiler: OA

Last edited by Bunuel on 12 Feb 2014, 07:33, edited 1 time in total.
Edited the question and added the OA.

Kudos [?]: 90 [0], given: 13

Senior Manager
Joined: 04 Jun 2008
Posts: 286

Kudos [?]: 160 [0], given: 15

### Show Tags

11 Jul 2009, 11:46
Here any statement that gives you total number of people in absolute values is sufficient.

60% - >40 age

ie 18% are graduates and above 40 years of age

Now if you get the number for any of these percentages, you can find out the 18% figure.

statement 1 gives one such figure: 50% graduates = 100 people......sufficient (you know 50%, you can find 18%)
stmt 2 gives you another percentage figure, but no absolute figure.....insufficient

Kudos [?]: 160 [0], given: 15

Manager
Joined: 08 Jul 2009
Posts: 172

Kudos [?]: 90 [0], given: 13

### Show Tags

11 Jul 2009, 14:44
A is correct

Posted from my mobile device

Kudos [?]: 90 [0], given: 13

Manager
Joined: 05 Oct 2011
Posts: 169

Kudos [?]: 55 [0], given: 62

### Show Tags

08 Nov 2011, 13:21
It is easier to solve this problem if we do a matrix. But any way, it is clear that only (1) gives a quantitive amount where (2) gives just percentage.

Hence only (1) is sufficient to answer and not (2)
A

Kudos [?]: 55 [0], given: 62

Manager
Joined: 22 Aug 2013
Posts: 99

Kudos [?]: 38 [0], given: 60

Schools: ISB '15
Re: In a certain office, 50 percent of the employees are college [#permalink]

### Show Tags

12 Feb 2014, 06:52
Hi,
_________________

Veritas Prep - 650
MGMAT 1 590
MGMAT 2 640 (V48/Q31)

Kudos [?]: 38 [0], given: 60

Math Expert
Joined: 02 Sep 2009
Posts: 42249

Kudos [?]: 132618 [2], given: 12326

Re: In a certain office, 50 percent of the employees are college [#permalink]

### Show Tags

12 Feb 2014, 07:34
2
KUDOS
Expert's post
1
This post was
BOOKMARKED
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 40 have master's degrees?

Let x be the number of employees in that office. Given that:
0.6x = employees over 40;
0.3*0.6x = employees over 40 with master's degrees.

(1) Exactly 100 of the employees are college graduates --> 0.5x=100. We can find the value of x, thus we can determine the value of 0.3*0.6x. Sufficient.

(2) Of the employees 40 years old or less, 25 percent have master's degrees. We have no information about the number of employees in any group, only percentages. Not sufficient.

OPEN DISCUSSION OF THIS QUESTION IS HERE: in-a-certain-office-50-percent-of-the-employees-are-college-143768.html
_________________

Kudos [?]: 132618 [2], given: 12326

Non-Human User
Joined: 09 Sep 2013
Posts: 15704

Kudos [?]: 282 [0], given: 0

Re: In a certain office, 50 percent of the employees are college [#permalink]

### Show Tags

07 Nov 2015, 03:56
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

Kudos [?]: 282 [0], given: 0

Manager
Joined: 17 Aug 2015
Posts: 105

Kudos [?]: 13 [0], given: 196

Re: In a certain office, 50 percent of the employees are college [#permalink]

### Show Tags

13 Dec 2016, 19:57
Bunuel wrote:
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 40 have master's degrees?

Let x be the number of employees in that office. Given that:
0.6x = employees over 40;
0.3*0.6x = employees over 40 with master's degrees.

(1) Exactly 100 of the employees are college graduates --> 0.5x=100. We can find the value of x, thus we can determine the value of 0.3*0.6x. Sufficient.

(2) Of the employees 40 years old or less, 25 percent have master's degrees. We have no information about the number of employees in any group, only percentages. Not sufficient.

OPEN DISCUSSION OF THIS QUESTION IS HERE: in-a-certain-office-50-percent-of-the-employees-are-college-143768.html

Bunuel,
I have a question. The stem talks about college graduates and then later mentions master's degree. Initially I was a bit concerned about if it is a three set problem -- college graduates - masters and non masters with age. How can we safely assume that college graduates means only those with masters? That makes the problem simpler ofcourse. Any thoughts?

Kudos [?]: 13 [0], given: 196

Senior Manager
Joined: 21 Aug 2016
Posts: 297

Kudos [?]: 19 [0], given: 136

Location: India
GPA: 3.9
WE: Information Technology (Computer Software)
Re: In a certain office, 50 percent of the employees are college [#permalink]

### Show Tags

13 Dec 2016, 23:34
ajdse22 wrote:
Bunuel wrote:
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 40 have master's degrees?

Let x be the number of employees in that office. Given that:
0.6x = employees over 40;
0.3*0.6x = employees over 40 with master's degrees.

(1) Exactly 100 of the employees are college graduates --> 0.5x=100. We can find the value of x, thus we can determine the value of 0.3*0.6x. Sufficient.

(2) Of the employees 40 years old or less, 25 percent have master's degrees. We have no information about the number of employees in any group, only percentages. Not sufficient.

OPEN DISCUSSION OF THIS QUESTION IS HERE: in-a-certain-office-50-percent-of-the-employees-are-college-143768.html

Bunuel,
I have a question. The stem talks about college graduates and then later mentions master's degree. Initially I was a bit concerned about if it is a three set problem -- college graduates - masters and non-masters with age. How can we safely assume that college graduates means only those with masters? That makes the problem simpler ofcourse. Any thoughts?

It is less likely that a question contains two different sets with the name college graduate and having master's degree. A person with master's degree can be said to be a college graduate however, a college graduate does not necessarily mean that the person has master's degree . In the given question, college graduate term is used only in the first statement and later, it is referred by the term master's degree. Moreover, no further data is provided on college graduate, so it is safe to assume that they are indeed the same set.

Hope it helps..
+1 Kudos if you like the post

Kudos [?]: 19 [0], given: 136

Math Expert
Joined: 02 Sep 2009
Posts: 42249

Kudos [?]: 132618 [0], given: 12326

Re: In a certain office, 50 percent of the employees are college [#permalink]

### Show Tags

14 Dec 2016, 00:33
ajdse22 wrote:
Bunuel wrote:
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 40 have master's degrees?

Let x be the number of employees in that office. Given that:
0.6x = employees over 40;
0.3*0.6x = employees over 40 with master's degrees.

(1) Exactly 100 of the employees are college graduates --> 0.5x=100. We can find the value of x, thus we can determine the value of 0.3*0.6x. Sufficient.

(2) Of the employees 40 years old or less, 25 percent have master's degrees. We have no information about the number of employees in any group, only percentages. Not sufficient.

OPEN DISCUSSION OF THIS QUESTION IS HERE: in-a-certain-office-50-percent-of-the-employees-are-college-143768.html

Bunuel,
I have a question. The stem talks about college graduates and then later mentions master's degree. Initially I was a bit concerned about if it is a three set problem -- college graduates - masters and non masters with age. How can we safely assume that college graduates means only those with masters? That makes the problem simpler ofcourse. Any thoughts?

College graduates and those who have a master degree are not the same group.

_________________

Kudos [?]: 132618 [0], given: 12326

Re: In a certain office, 50 percent of the employees are college   [#permalink] 14 Dec 2016, 00:33
Display posts from previous: Sort by

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

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.