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 →

a data from gmatclub

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Legendary Member
Posts: 1119
Joined: Fri May 07, 2010 8:50 amFollowed by: 3 members
Thanked: 29 times
by diebeatsthegmat » Tue May 10, 2011 10:07 pm
If w + x < 0, is w - y > 0 ?

1) x + y < 0

2) y < x < w

[spoiler]i know B is sufficient but why A is not? if x+w< o (1) and x+y<0 (2) we can take (1)-(2) <=> w-y< o and sufficient.
why the answer cant be D?
[/spoiler]
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
User avatar
Master | Next Rank: 500 Posts
Posts: 135
Joined: Tue Mar 22, 2011 12:01 pmFollowed by: 3 members
Thanked: 21 times
GMAT Score:720

by sourabh33 » Wed May 11, 2011 12:05 am
For Statement 1

When W = -5, X = -5, Y = 4 then w+x = -10 <0 , x+y = -1 <0, w-y=-9 < 0
When W = 5, X = -6, Y = -7 then w+x = -1<0 , x+y = -1 <0, w-y= 12 > 0
When W = 5, X = -6, Y = 5 then w+x = -1<0 , x+y = -1 <0, w-y= 0 = 0

There statement 1 is insufficient as w-y can have multiple solutions when x+y<0
Last edited by sourabh33 on Wed May 11, 2011 6:40 am, edited 1 time in total.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 15539
Joined: Tue May 25, 2010 12:04 pmFollowed by: 1906 members
Location: New York, NY
Thanked: 13060 times
GMAT Score:790

by GMATGuruNY » Wed May 11, 2011 4:33 am
diebeatsthegmat wrote:If w + x < 0, is w - y > 0 ?

1) x + y < 0

2) y < x < w

[spoiler]i know B is sufficient but why A is not? if x+w< o (1) and x+y<0 (2) we can take (1)-(2) <=> w-y< o and sufficient.
why the answer cant be D?
[/spoiler]
Is w-y > 0?

Question rephrased: Is w > y?

Statement 1: x+y < 0.
Rewritten, y < -x.
Rewritten, w+x < 0 becomes w < -x.
Now we can see that both w and y are less than -x, but no information is given about whether w>y.
Insufficient.

Statement 2: y < x < w.
Thus, y < w.
Sufficient.

The correct answer is B.
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
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1