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LAST WEEK´S GMAT QUESTION

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LAST WEEK´S GMAT QUESTION [#permalink] New post 24 Jul 2007, 09:18
I took the test last week, look at this and try to solve it:

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Re: LAST WEEK´S GMAT QUESTION [#permalink] New post 24 Jul 2007, 10:20
buffett76 wrote:
I took the test last week, look at this and try to solve it:


** MODERATOR EDIT **


Cannot proceed any further. Was there such a answer choice ??
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 [#permalink] New post 24 Jul 2007, 10:23
nice try but the answers were 1, square root of 2 .... there was not any answer with X or Y. it was very tough. i didnt solve it. and i havent solve it yet.
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 [#permalink] New post 24 Jul 2007, 10:29
I didn't even know where to start...
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 [#permalink] New post 24 Jul 2007, 10:30
buffett76 wrote:
nice try but the answers were 1, square root of 2 .... there was not any answer with X or Y. it was very tough. i didnt solve it. and i havent solve it yet.


Hmmm.
Was there anything like [1+sqrt(5)]/2 or [1-sqrt(5)]/2 ??
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 [#permalink] New post 24 Jul 2007, 10:55
I agree with sumande. These are the only possible answers.
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 [#permalink] New post 24 Jul 2007, 11:39
I really dont remember guys. it is so tough that i am thinking i misread something. i have reached

1/4*(x/y + y/x) + 1/2 , let me explain how...

** MODERATOR EDIT **


dont lose time with this because there must be something I misread...
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 [#permalink] New post 24 Jul 2007, 21:09
here is what i got

i arrived at the following

(x-y)(x+y)= 4xy
x^2-y^2=4xy
divide by xy
x/y-y/x=4

** MODERATOR EDIT **

find the option closest to the above fraction.
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 [#permalink] New post 25 Jul 2007, 11:08
Are you sure about that?? I get 2 answers,

(sqrt(5)-3)/(sqrt(5)-1) and (sqrt(5)+3)/(sqrt(5)+1)


Any other takers?

ps. I hope I don't get that on my exam.
  [#permalink] 25 Jul 2007, 11:08
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