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17 Jul 2010, 08:21
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
85%
(hard)
Question Stats:
43% (02:39) correct
57%
(01:56)
wrong
based on 54
sessions
History
Date
Time
Result
Not Attempted Yet
If y>0 is x>y?
1. 5x-4y=3
2. 4y-5x=3
1. 5x-4y=3
2. 4y-5x=3
This Question is Locked Due to Poor Quality
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17 Jul 2010, 09:29
Kudos
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agnok
Given: \(y>0\). Question: is \(x>y\)?
(1) \(5x-4y=3\) --> if \(x=1\), then \(y=\frac{1}{2}\) and \(x>y\), so the answer to the question is YES but if \(x=3\), then \(y=3\) and \(x=y\), so the answer to the question is NO. Not sufficient.
(2) \(4y-5x=3\). Now if \(x\leq{0}\), then obviously \(y>0\geq{x}\) (so the answer to the question is NO). If \(x>0\) --> \(y=\frac{5}{3}x+\frac{3}{4}\) --> \(y\) equals to some positive number more than \(x\) (as \(\frac{5}{3}x\) is more than \(x\)) plus positive number (\(\frac{3}{4}\)), so \(y\) is definitely more than \(x\) and again answer to the question is NO. Sufficient.
Answer: B.
But this is not a good question as: on the GMAT, two data sufficiency statements always provide TRUE information and these statements never contradict each other and in our question no pair of (x,y) is possible to satisfy both statements, hence they both can not be true.
Hope it helps.
20 Jul 2010, 08:28
Kudos
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Thanks... I understood the explanation
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Hi there,
The question you've reached has been archived due to not meeting our community quality standards. No more replies are possible here.
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