• NEW! FREE Beat The GMAT Quizzes
Hundreds of Questions Highly Detailed Reporting Expert Explanations
• 7 CATs FREE!
If you earn 100 Forum Points

Engage in the Beat The GMAT forums to earn
100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## inequality ##### This topic has 9 member replies ## inequality If x is not equal to y (x-y)/ (x+y) > 1 ? 1) x>0 2)y<0 Senior | Next Rank: 100 Posts Joined 29 Jun 2008 Posted: 66 messages Upvotes: 1 Is the answer E? _________________ When the going gets tough, the tough gets going. Legendary Member Joined 22 Feb 2008 Posted: 572 messages Upvotes: 21 IMO C Master | Next Rank: 500 Posts Joined 19 May 2008 Posted: 246 messages Upvotes: 7 Test Date: 06/30/2008 Target GMAT Score: 730 IMO it is B. Please let me know OA. my approach. We gotta prove is x-y>x+y ? i.e. is -y>y stmt 2 SUFF. regards, _________________ Cubicle Bound Misfit Master | Next Rank: 500 Posts Joined 04 Jun 2008 Posted: 203 messages Upvotes: 5 GMAT Score: 650 cubicle_bound_misfit wrote: We gotta prove is x-y>x+y When you multiply an inequality, you need to be certain of the sign. If x+y is negative, the sign is reversed.... so I don't think you can do this since we can't be sure of the sign. Would be interested in the OA though. I need a methodical way of working this one out! Senior | Next Rank: 100 Posts Joined 12 Jun 2008 Posted: 81 messages Upvotes: 1 I think "cubicle_bound_misfit" i correct in solving the eqn. The eqn can be reduced to 2y < 0 or y <0 so answer shld be B . Pls correct me if I am going fundamentally wrong in soloving the equation. Senior | Next Rank: 100 Posts Joined 11 Jul 2008 Posted: 58 messages Upvotes: 4 Test Date: 8/16/2008 Target GMAT Score: 730+ I think jsl brings up a good point to remember about signs and direction of inequality when cross multiplying. But I also agree with some of the other posters and think B is sufficient. To simplify the "rephrase" of the questions stem asks: "Is y>0 or is y<0?" (factoring in that the unknown signs can flip the inequality) 1) tells us nothing about y - insufficient 2) tells us y<0 - SUFFICIENT Master | Next Rank: 500 Posts Joined 19 May 2008 Posted: 246 messages Upvotes: 7 Test Date: 06/30/2008 Target GMAT Score: 730 hi JSL, the way I tried it if x-y/x+y is > 1 then both denominator and numerator both has to be either greater than zero or less than zero. in both the cases if you pick numbers , multiplying expression by denominator does not invert ineqalities. Please let me know if I am wrong and what's the OA? regards, _________________ Cubicle Bound Misfit Senior | Next Rank: 100 Posts Joined 11 Jul 2008 Posted: 58 messages Upvotes: 4 Test Date: 8/16/2008 Target GMAT Score: 730+ Actually I'm rethinking this going back through it with a common sense check by picking some numbers... maybe I've overthought the problem by trying to solve it with algebra Maybe 2) y<0 isn't so sufficient after all. Consider x=3, y=-1 Stem eqn will equal 2 which is a "YES" answer Consider x=3, y=-4 Stem eqn will equal -1 which is a "NO" answer Statement 1) suffers the same conclusion, as well as the statements together. Could E be the answer after all? Senior | Next Rank: 100 Posts Joined 11 Jul 2008 Posted: 58 messages Upvotes: 4 Test Date: 8/16/2008 Target GMAT Score: 730+ I checked and the OA on this is E. • FREE GMAT Exam Know how you'd score today for$0

Available with Beat the GMAT members only code

• Free Veritas GMAT Class
Experience Lesson 1 Live Free

Available with Beat the GMAT members only code

• Get 300+ Practice Questions

Available with Beat the GMAT members only code

• Free Trial & Practice Exam
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• 1 Hour Free
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• 5 Day FREE Trial
Study Smarter, Not Harder

Available with Beat the GMAT members only code

• Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

• 5-Day Free Trial
5-day free, full-access trial TTP Quant

Available with Beat the GMAT members only code

• Award-winning private GMAT tutoring
Register now and save up to \$200

Available with Beat the GMAT members only code

• Free Practice Test & Review
How would you score if you took the GMAT

Available with Beat the GMAT members only code

### Top First Responders*

1 GMATGuruNY 54 first replies
2 Brent@GMATPrepNow 41 first replies
3 Jay@ManhattanReview 40 first replies
4 Ian Stewart 30 first replies
5 ceilidh.erickson 16 first replies
* Only counts replies to topics started in last 30 days
See More Top Beat The GMAT Members

### Most Active Experts

1 Scott@TargetTestPrep

Target Test Prep

197 posts
2 fskilnik@GMATH

GMATH Teacher

124 posts
3 Max@Math Revolution

Math Revolution

83 posts
4 GMATGuruNY

The Princeton Review Teacher

81 posts
5 Brent@GMATPrepNow

GMAT Prep Now Teacher

66 posts
See More Top Beat The GMAT Experts