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# Data Sufficiency problem: What fraction of this year's

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Intern
Joined: 04 Jan 2009
Posts: 12

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Schools: not sure
Data Sufficiency problem: What fraction of this year's [#permalink]

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15 Mar 2009, 14:13
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Data Sufficiency problem:

What fraction of this year's graduating class are males?
(1) of this year's graduating class, 33% of the males and 20% of the females transferred from another college
(2) of this year's graduating class, 25% transferred from another college

Can anyone explain this? Thanks!

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Senior Manager
Joined: 12 Mar 2009
Posts: 308

Kudos [?]: 453 [0], given: 1

Re: GMAT Prep CD - DS [#permalink]

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16 Mar 2009, 07:09
Say,

X = total number of students graduated
B = total number of boys graduated
G = total number of girls graduated

State B: alone does not help me
State A: alone does not help me

Taken together,

1/3 B + 1/5 G = ¼ X
B+G= X
We can solve this and get the ans as 5/13

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SVP
Joined: 28 Dec 2005
Posts: 1545

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Re: GMAT Prep CD - DS [#permalink]

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17 Mar 2009, 17:18
wouldnt this one be E ? You dont know how many girls graduating didnt transfer right .. ?

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Re: GMAT Prep CD - DS   [#permalink] 17 Mar 2009, 17:18
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# Data Sufficiency problem: What fraction of this year's

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