GMATPrep2: If x != -y, is (x-y)/(x+y) > 1
-
navalpike
- Master | Next Rank: 500 Posts
- Posts: 103
- Joined: Mon May 04, 2009 11:53 am
- Thanked: 6 times
Hi,msvmuthu- I replied to your question here (another thread about the same question)
www.beatthegmat.com/gmatprep2-if-x-y-is ... 20022.html
Can anyone point me to the correct link referred to above by Ian. As it is, the link brings me right back to this page.
Thanks,
-
navalpike
- Master | Next Rank: 500 Posts
- Posts: 103
- Joined: Mon May 04, 2009 11:53 am
- Thanked: 6 times
Never mind, found it. I think this is the right link.
https://www.beatthegmat.com/inequalities-t20825.html
https://www.beatthegmat.com/inequalities-t20825.html
GMAT/MBA Expert
-
Ian Stewart
- GMAT Instructor
- Posts: 2623
- Joined: Mon Jun 02, 2008 3:17 am
- Location: Montreal
- Thanked: 1090 times
- Followed by:355 members
- GMAT Score:780
Not sure how that happened - sorry about that! Thanks for finding the correct link - I'll edit my post to avoid any further confusion.navalpike wrote:Never mind, found it. I think this is the right link.
https://www.beatthegmat.com/inequalities-t20825.html
For online GMAT math tutoring, or to buy my higher-level Quant books and problem sets, contact me at ianstewartgmat at gmail.com
ianstewartgmat.com
ianstewartgmat.com
The question asks if (x-y)/(x+y) > 1 or (x-y)/(x+y) -1 > 0
Simplifying:
[(x-y-x-y)/(x+y)] > 0
-2y/(x+y) > 0.
Hence the question is whether [-2y/(x+y)] > 0
Statement 1: x>0. y can be +ve or -ve. Insufficient
Statement 2: y<0. x can be +ve and less than y or x can be +ve and greater than y. Insufficient
Both 1 and 2 doesn't provide enough information.
IMO E
Simplifying:
[(x-y-x-y)/(x+y)] > 0
-2y/(x+y) > 0.
Hence the question is whether [-2y/(x+y)] > 0
Statement 1: x>0. y can be +ve or -ve. Insufficient
Statement 2: y<0. x can be +ve and less than y or x can be +ve and greater than y. Insufficient
Both 1 and 2 doesn't provide enough information.
IMO E
