|
Author |
Message |
|
TAGS:
|
|
|
Senior Manager
Joined: 12 Mar 2006
Posts: 373
Schools: Kellogg School of Management
Followers: 2
Kudos [?]:
19
[0], given: 3
|
If the drama club and music club are combined, what percent [#permalink]
 13 Aug 2009, 21:12
Question Stats:
26% (01:44) correct
73% (00:49) wrong based on 0 sessions
If the drama club and music club are combined, what percent of the combined membership will be male ? (1) Of the 16 members of the drama club, 15 are male (2) Of the 20 members of the music club, 10 are male
_________________
_______________________________________________________________________________
My GMAT Story: 750-q-50-v42-thank-you-gmat-club-82610.html
|
|
|
|
|
|
|
CEO
Joined: 29 Aug 2007
Posts: 2530
Followers: 41
Kudos [?]:
358
[1] , given: 19
|
1
This post received
KUDOS
prude_sb wrote: If the drama club and music club are combined, what percent of the combined membership will be male ?
(1) Of the 16 members of the drama club, 15 are male
(2) Of the 20 members of the music club, 10 are male Do you know - the members in Drama club and Music club are mutually exclusive?
_________________
Verbal: new-to-the-verbal-forum-please-read-this-first-77546.html
Math: new-to-the-math-forum-please-read-this-first-77764.html
Gmat: everything-you-need-to-prepare-for-the-gmat-revised-77983.html
GT
|
|
|
|
|
|
Senior Manager
Joined: 12 Mar 2006
Posts: 373
Schools: Kellogg School of Management
Followers: 2
Kudos [?]:
19
[0], given: 3
|
GMAT TIGER wrote: prude_sb wrote: If the drama club and music club are combined, what percent of the combined membership will be male ?
(1) Of the 16 members of the drama club, 15 are male
(2) Of the 20 members of the music club, 10 are male Do you know - the members in Drama club and Music club are mutually exclusive? That is the key ...i did not consider that ... i picked c but ans is e
_________________
_______________________________________________________________________________
My GMAT Story: 750-q-50-v42-thank-you-gmat-club-82610.html
|
|
|
|
|
|
Manager
Joined: 25 Jul 2009
Posts: 119
Schools: NYU, NUS, ISB, DUKE, ROSS, DARDEN
Followers: 2
Kudos [?]:
103
[0], given: 17
|
GMAT TIGER wrote: prude_sb wrote: If the drama club and music club are combined, what percent of the combined membership will be male ?
(1) Of the 16 members of the drama club, 15 are male
(2) Of the 20 members of the music club, 10 are male Do you know - the members in Drama club and Music club are mutually exclusive? Good one GMAT TIGER!! +1 for you !!
_________________
KUDOS me if I deserve it !! 
My GMAT Debrief - 740 (Q50, V39) | My Test-Taking Strategies for GMAT | Sameer's SC Notes
|
|
|
|
|
|
Manager
Joined: 12 Aug 2009
Posts: 107
Followers: 3
Kudos [?]:
12
[0], given: 2
|
pretty good answer.
|
|
|
|
|
|
Manager
Joined: 10 Jul 2009
Posts: 136
Location: Ukraine, Kyiv
Followers: 2
Kudos [?]:
14
[0], given: 60
|
GMATTIGER, could you explain this more clearer, please. Or, maybe, someone else. What do you mean by saying they are mutually exclusive? How can this be? I do not get it... picked choice C... Will kudos for clarity. Thanks in advance.
_________________
Never, never, never give up
|
|
|
|
|
|
GMAT Instructor
Joined: 24 Jun 2008
Posts: 973
Location: Toronto
Followers: 167
Kudos [?]:
443
[1] , given: 3
|
1
This post received
KUDOS
Here, we need to know whether some people might belong to both the drama club and the music club - that's what GMAT TIGER is getting at when he asks if the clubs are mutually exclusive. If we knew that no one belonged to both clubs, the answer would be C (and 25/36 would be male), but if some people might belong to both clubs, we might have, for example, 10 men who are in both clubs, 5 men and 1 woman in the drama club only, and 10 women in the music club only, leaving us with 15/26 who are male. Of course there are many other possibilities.
_________________
Nov 2011: After years of development, I am now making my advanced Quant books and high-level problem sets available for sale. Contact me at ianstewartgmat at gmail.com for details.
Private GMAT Tutor based in Toronto
|
|
|
|
|
|
Manager
Joined: 10 Jul 2009
Posts: 136
Location: Ukraine, Kyiv
Followers: 2
Kudos [?]:
14
[0], given: 60
|
IanStewart wrote: Here, we need to know whether some people might belong to both the drama club and the music club - that's what GMAT TIGER is getting at when he asks if the clubs are mutually exclusive. If we knew that no one belonged to both clubs, the answer would be C (and 25/36 would be male), but if some people might belong to both clubs, we might have, for example, 10 men who are in both clubs, 5 men and 1 woman in the drama club only, and 10 women in the music club only, leaving us with 15/26 who are male. Of course there are many other possibilities. aaaa, I got it! Didn't even think about this possibility. Thank you, IanStewart. Kudos, as promised.
_________________
Never, never, never give up
|
|
|
|
|
|
Manager
Joined: 06 Mar 2010
Posts: 108
Followers: 2
Kudos [?]:
1
[0], given: 11
|
Just had a doubt.
Are we making here an assumption that both the sets are not mutually exclusive? This information is not mentioned in the question anyway.
Also do we need to assume similar information when not given in GMAT ques?
|
|
|
|
|
|
Kaplan GMAT Instructor
Joined: 21 Jun 2010
Posts: 75
Location: Toronto
Followers: 16
Kudos [?]:
64
[1] , given: 2
|
1
This post received
KUDOS
Quote: Are we making here an assumption that both the sets are not mutually exclusive? Nope. We are refraining from assuming that they are. This doesn't mean that we are assuming that they aren't. Instead, we are acknowledging the possibility that they may not be. | Also do we need to assume similar information when not given in GMAT ques? |
...not sure I know what you mean by "similar information". In DS, we can only ever make (and should always make) 2 assumptions: --The statements provide TRUE information --The statements will never contradict each other.
_________________
Kaplan Teacher in Toronto
http://www.kaptest.com/GMAT
Prepare with Kaplan and save $150 on a course!
Kaplan Reviews
|
|
|
|
|
|
Intern
Joined: 01 Jun 2010
Posts: 7
Followers: 0
Kudos [?]:
0
[0], given: 1
|
To Kaplan GMAT Instructor, I am not clear. Should we assume here that there are no common members between these clubs? rp
|
|
|
|
|
|
Kaplan GMAT Instructor
Joined: 25 Aug 2009
Posts: 574
Location: Cambridge, MA
Followers: 51
Kudos [?]:
129
[0], given: 2
|
Hi rpgmat, We should not assume anything, yes or no. We have no idea whether or not there is any overlap--there could be maximum possible overlap, with all 10 music men in the drama club and the 1 female drama clubber in the music club, but there could also be no overlap at all. And, depending on the overlap (or lack thereof), we get different answer to the percentage of male students in the new, combined club. Since this unknown variable affects our answers, it means the question is unanswerable--and that means that the Data Sufficiency answer is (E), the statements are NOT sufficient even TOGETHER.
_________________
Eli Meyer
Kaplan Teacher
http://www.kaptest.com/GMAT
Prepare with Kaplan and save $150 on a course!
Kaplan Reviews
|
|
|
|
|
|
Manager
Joined: 07 Aug 2010
Posts: 90
Followers: 1
Kudos [?]:
13
[0], given: 9
|
good reinforcement for me "not to assume"
_________________
Click that thing - Give kudos if u like this
|
|
|
|
|
|
Manager
Joined: 25 Aug 2010
Posts: 102
Followers: 1
Kudos [?]:
4
[0], given: 1
|
Ans is : E since either of the statements, total number of the members are not available. so E wins
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Similar topics |
Author |
Replies |
Last post |
|
Similar
Topics:
|
 |
|
|
If the drama club and music club are combined, what percent
|
ffgmat |
10 |
04 Feb 2006, 00:02 |
 |
|
|
If the drama club and music club are combined, what percent
|
dragonball20cal |
1 |
30 Jun 2007, 14:42 |
|
|
|
|
If the drama club and music club are combined, what percent
|
baileyf16 |
1 |
29 Oct 2007, 15:06 |
|
|
1
|
|
If the drama club and music club are combined, what percent
|
arjtryarjtry |
4 |
03 Aug 2008, 19:41 |
|
|
1
|
|
If the drama club and music club are combined, what percent
|
study |
4 |
22 Jan 2009, 09:54 |
|
|
|
|
|
|
close
