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taken from GMAT PAPER TEST 55. I know. It's simple. I'm

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taken from GMAT PAPER TEST 55. I know. It's simple. I'm [#permalink] New post 17 Jan 2008, 03:33
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taken from GMAT PAPER TEST 55.

I know. It's simple. I'm searching for a method to do those questions. I "fell in love" with the double set matrix method, but i cannot apply it here correctly.

apart from solving this Q, I wonder how one knows how to approach thsoe word problems?

OA will folow.

In a sample of college students, 40 percent are third-year students and 70 percent are not second-year students. What fraction of those students who are not third-year students are second-year students?
(A) 3/4
(B) 2/3
(C) 4/7
(D) 1/2
(E) 3/7
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Re: best approch to the folowing? [#permalink] New post 17 Jan 2008, 03:59
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GGUY wrote:
taken from GMAT PAPER TEST 55.

I know. It's simple. I'm searching for a method to do those questions. I "fell in love" with the double set matrix method, but i cannot apply it here correctly.

apart from solving this Q, I wonder how one knows how to approach thsoe word problems?

OA will folow.

In a sample of college students, 40 percent are third-year students and 70 percent are not second-year students. What fraction of those students who are not third-year students are second-year students?
(A) 3/4
(B) 2/3
(C) 4/7
(D) 1/2
(E) 3/7


let's put the total=100
third year:40
third year+first year=70 ===== first year = 30
second year=100-40-30=30
second year/first+second====30/60=1/2 OA D
Re: best approch to the folowing?   [#permalink] 17 Jan 2008, 03:59
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taken from GMAT PAPER TEST 55. I know. It's simple. I'm

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