Is there any shorter way of doing this question beside plugging in the values?
Q.) If x is not equal to -y, is (x-y)/(x+y) > 1 ?
1) x>0
2) y<0
GMAT Prep help
This topic has expert replies
-
- Senior | Next Rank: 100 Posts
- Posts: 97
- Joined: Wed Sep 01, 2010 11:11 am
- Thanked: 1 times
- Followed by:2 members
- GMATGuruNY
- GMAT Instructor
- Posts: 15539
- Joined: Tue May 25, 2010 12:04 pm
- Location: New York, NY
- Thanked: 13060 times
- Followed by:1906 members
- GMAT Score:790
Plugging in values is extremely efficient if you try combinations that satisfy both statements.akshatgupta87 wrote:Is there any shorter way of doing this question beside plugging in the values?
Q.) If x is not equal to -y, is (x-y)/(x+y) > 1 ?
1) x>0
2) y<0
Let x=2 and y=-1.
Is (2-(-1)) / (2+(-1)) > 1? Yes.
Let x=1 and y=-2.
Is (1-(-2)) / (1+(-2)) > 1? No.
Since the combinations above satisfy both statements, and in the first case the answer is Yes and in the second case the answer is No, the correct answer is E.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
-
- Master | Next Rank: 500 Posts
- Posts: 183
- Joined: Sat Apr 16, 2011 11:29 am
- Thanked: 7 times
- Followed by:2 members
Hi Mitch,
Can we do like this
x-y/x+y>1
= x-y>x+y
= -2y>0
= y < 0
this nothing but option B) so B is correct
so answer is B)
is this wrong way of approach????
Can we do like this
x-y/x+y>1
= x-y>x+y
= -2y>0
= y < 0
this nothing but option B) so B is correct
so answer is B)
is this wrong way of approach????
-
- Senior | Next Rank: 100 Posts
- Posts: 97
- Joined: Wed Sep 01, 2010 11:11 am
- Thanked: 1 times
- Followed by:2 members