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If the drama club and music club is combined, what percent

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If the drama club and music club is combined, what percent [#permalink] New post 21 Feb 2011, 04:23
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If the drama club and music club is combined, what percent of the combined membership is 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.
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Re: Tough GMAT prep DS [#permalink] New post 21 Feb 2011, 04:51
1) 15 are male and 1 female in Drama club. Tells nothing about music club. Not sufficient.
2) 10 are male and 10 female in Music club. Tells nothing about drama club. Not sufficient.

Combining both;

25 Males out of 36 members; % of male found.
Sufficient.

Ans: "C"

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Re: Tough GMAT prep DS [#permalink] New post 21 Feb 2011, 05:25
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fluke wrote:
1) 15 are male and 1 female in Drama club. Tells nothing about music club. Not sufficient.
2) 10 are male and 10 female in Music club. Tells nothing about drama club. Not sufficient.

Combining both;

25 Males out of 36 members; % of male found.
Sufficient.

Ans: "C"


No C is not right. We cannot assume that there is no overlap between the clubs.

If the drama club and music club is combined, what percent of the combined membership is male?

(1) Of the 16 members of the drama club, 15 are male. Not sufficient.

(2) Of the 20 members of the music club, 10 are male. Not sufficient.

(1)+(2) Since we don't know how many members of the drama club were also the members of the music club then we can not assume that there wasn't any overlap between the clubs and simply write (15+10)/(16+20), so even taken together statements are not sufficient.

Answer: E.

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Re: GMAT prep question [#permalink] New post 25 Mar 2012, 10:41
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imadkho 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.


Merging similar topics. Please ask if anything remains unclear.

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COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re: If the drama club and music club is combined, what percent [#permalink] New post 13 Oct 2013, 05:44
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mydreambschool wrote:
If the drama club and music club is combined, what percent of the combined membership is 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.


One important takeaway here is that questions in GMAT are NEVER that easy, I guess unless you are doing extremely bad in the exam but even then. Always think twice before answering something that seems really easy or "obvious"
Re: If the drama club and music club is combined, what percent   [#permalink] 13 Oct 2013, 05:44
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