BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

X > Y question

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 8
Joined: Mon Mar 15, 2010 4:02 pm
by anthoj » Mon Mar 15, 2010 4:06 pm
Is x > y?

(1) x + y < 0
(2) x - y > 0

The right answer is supposed to be B, but I think it should be D. Here's how I came to that conculsion.

(1):
x + y < 0
so x < -y
so x > y <- is this wrong??
SUFFICIENT

(2):
x - y > 0
so x > y
SUFFICIENT

So, where did I go wrong?

Thanks in advance for any help offered.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
Posts: 216
Joined: Mon Dec 21, 2009 10:26 am
Thanked: 16 times

by student22 » Mon Mar 15, 2010 5:01 pm
For statement 1:

X = -7
Y = -5

-7 + -5 = -12

-12 < 0 , but Y > X.

Basically, the problem with that statement is that X and Y are interchangeable.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 25
Joined: Sat Mar 06, 2010 9:43 amFollowed by: 1 member
Thanked: 2 times

by jpjp » Mon Mar 15, 2010 5:37 pm
anthoj wrote:Is x > y?

(1) x + y < 0
(2) x - y > 0

The right answer is supposed to be B, but I think it should be D. Here's how I came to that conculsion.

(1):
x + y < 0
so x < -y
so x > y <- is this wrong??
SUFFICIENT

(2):
x - y > 0
so x > y
SUFFICIENT

So, where did I go wrong?

Thanks in advance for any help offered.
for (1), you made the negative sign disappear from your 2nd to last step to your last step. It shouldn't just disappear like that. If you switch the direction of the > sign, then the other side becomes negative .. so either x<-y or -x>y .. but negative sign doesn't go away
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1