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21 Nov 2010, 16:44
Kudos
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
69% (01:37) correct
31%
(01:40)
wrong
based on 1084
sessions
History
Date
Time
Result
Not Attempted Yet
If x - y > 10, is x - y > x + y ?
(1) x = 8
(2) y = -20
1.JPG [ 48.8 KiB | Viewed 9231 times ]
(1) x = 8
(2) y = -20
Attachment:
1.JPG [ 48.8 KiB | Viewed 9231 times ]
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
21 Nov 2010, 16:54
Kudos
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If x - y > 10, is x - y > x + y ?
Given: \(x-y>10\).
Question: is \(x-y>x+y\)?
Is \(2y<0\)?
Is \(y<0\)?
(1) \(x=8\). Plug into \(x - y > 10\):
\(8-y>10\);
\(y<-2\), hence \(y<0\). Sufficient.
(2) \(y=-20\), hence \(y<0\). Sufficient.
Answer: D.
Given: \(x-y>10\).
Question: is \(x-y>x+y\)?
Is \(2y<0\)?
Is \(y<0\)?
(1) \(x=8\). Plug into \(x - y > 10\):
\(8-y>10\);
\(y<-2\), hence \(y<0\). Sufficient.
(2) \(y=-20\), hence \(y<0\). Sufficient.
Answer: D.
18 Jul 2011, 04:40
Kudos
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siddhans
To prove: x-y>x+y
or x-y-x-y>0
or -2y>0
or y<0 ?
Stmt1: x=8
x-y > 10
8-y>10
-2-y>0
2+y<0
y<-2
Hence y < 0. Sufficient.
Stmt2: y=-20
Hence y <0. Sufficient.
OA D.
