Last visit was: 08 Jul 2025, 20:42 It is currently 08 Jul 2025, 20:42
Close
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
Your Progress

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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
User avatar
pkmme
Joined: 11 Apr 2011
Last visit: 11 Dec 2011
Posts: 58
Own Kudos:
83
 [56]
Given Kudos: 16
Posts: 58
Kudos: 83
 [56]
4
Kudos
Add Kudos
51
Bookmarks
Bookmark this Post
Most Helpful Reply
User avatar
Zarrolou
Joined: 02 Sep 2012
Last visit: 11 Dec 2013
Posts: 848
Own Kudos:
5,070
 [14]
Given Kudos: 219
Status:Far, far away!
Location: Italy
Concentration: Finance, Entrepreneurship
GPA: 3.8
Posts: 848
Kudos: 5,070
 [14]
11
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
User avatar
KarishmaB
Joined: 16 Oct 2010
Last visit: 08 Jul 2025
Posts: 16,101
Own Kudos:
74,210
 [12]
Given Kudos: 475
Location: Pune, India
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 16,101
Kudos: 74,210
 [12]
10
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
General Discussion
User avatar
cheetarah1980
Joined: 24 Aug 2010
Last visit: 06 Jan 2020
Posts: 1,332
Own Kudos:
Given Kudos: 74
Status:Current Student
Location: United States
GMAT 1: 710 Q48 V40
WE:Sales (Consumer Packaged Goods)
Products:
GMAT 1: 710 Q48 V40
Posts: 1,332
Kudos: 450
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Setting up a matrix is how I solve this one.


Diploma No Diploma Totals
Job of Choice w/Diploma
Job of Choice w/o Diploma = 10%
Job of Choice Total = 40%
Not Job of Choice with Diploma =.25X
Not Job of Choice w/o Diploma= .75X
Total Not Job of Choice = X
Total with Diploma
Total without Diploma
Total citizen = 100
If 40% of people have their job of choice, then 60% of people do NOT have their job of choice. 25% of 60% = 15%. We can also see that 30% of the people have their job of choice and a diploma (40%-10%=30%). 30% + 15% = 45%. Therefore 45% of the people in Country Z have a diploma.
User avatar
agdimple333
Joined: 24 Mar 2011
Last visit: 13 Aug 2013
Posts: 226
Own Kudos:
785
 [1]
Given Kudos: 20
Location: Texas
Posts: 226
Kudos: 785
 [1]
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
this can be done using a matrix set as in the attached.
Attachments

overlapping set.xlsx [9.29 KiB]
Downloaded 795 times

User avatar
amit2k9
Joined: 08 May 2009
Last visit: 18 Jun 2017
Posts: 538
Own Kudos:
623
 [3]
Given Kudos: 10
Status:There is always something new !!
Affiliations: PMI,QAI Global,eXampleCG
Posts: 538
Kudos: 623
 [3]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
out of 100, 40 have desired jobs and 60 don't have.
out of 60,25% have university degree = 0.25 * 60 = 15

out of 40,10 do not have university degree but have desired job.
thus 30 have desired job as well as university degree

hence total = 30 + 15 = 45 have university degree.
User avatar
skamal7
Joined: 02 Sep 2012
Last visit: 02 Dec 2013
Posts: 158
Own Kudos:
Given Kudos: 99
Location: United States
Concentration: Entrepreneurship, Finance
GMAT Date: 07-25-2013
GPA: 3.83
WE:Architecture (Computer Hardware)
Posts: 158
Kudos: 596
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Can someone help me to understand why do we do 25 % of 60 instead of just adding 30 +25??
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 08 Jul 2025
Posts: 102,594
Own Kudos:
739,586
 [2]
Given Kudos: 97,452
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 102,594
Kudos: 739,586
 [2]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
skamal7
Can someone help me to understand why do we do 25 % of 60 instead of just adding 30 +25??

Because the stem says that "25% of the people who do not have the job have a university diploma", not that "25% have a university diploma". 60% do NOT have the job, thus 25% of this group have a university diploma.

Hope it's clear.
User avatar
mvictor
User avatar
Board of Directors
Joined: 17 Jul 2014
Last visit: 14 Jul 2021
Posts: 2,127
Own Kudos:
1,248
 [1]
Given Kudos: 236
Location: United States (IL)
Concentration: Finance, Economics
GMAT 1: 650 Q49 V30
GPA: 3.92
WE:General Management (Transportation)
Products:
GMAT 1: 650 Q49 V30
Posts: 2,127
Kudos: 1,248
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
solved it through double matrix
Attachments

mixture.jpg
mixture.jpg [ 29.96 KiB | Viewed 26914 times ]

User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 37,358
Own Kudos:
Posts: 37,358
Kudos: 1,010
Kudos
Add Kudos
Bookmarks
Bookmark this Post
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.
Moderators:
Math Expert
102594 posts
PS Forum Moderator
679 posts