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 →

Is xy + xy < xy ?

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Senior | Next Rank: 100 Posts
Posts: 87
Joined: Mon Jun 30, 2008 5:44 amFollowed by: 2 members
Thanked: 14 times
by ronaldramlan » Sun Aug 07, 2011 4:00 am
Is xy + xy < xy ?

(1) x^2/y < 0

(2) x^9(y^3)^3 < (x^2)^4(y^8)


(A) Statement (1) alone is sufficient, but statement (2) alone is not sufficient.
(B) Statement (2) alone is sufficient, but statement (1) alone is not sufficient.
(C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
(D) Each statement ALONE is sufficient.
(E) Statements (1) and (2) TOGETHER are NOT sufficient.

I'll post OA after some replies ... :)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Legendary Member
Posts: 2789
Joined: Tue Jul 26, 2011 12:19 amFollowed by: 43 members
Location: Chennai, India
Thanked: 206 times
GMAT Score:640

by GmatKiss » Sun Aug 07, 2011 5:24 am
IMO:D :)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 351
Joined: Mon Jul 04, 2011 10:25 pmFollowed by: 4 members
Thanked: 57 times

by akhilsuhag » Sun Aug 07, 2011 5:53 am
Prompt:
is xy + xy < xy? = is 2xy < xy? = is xy <0 ?
So this is what the question is basically asking. So either one of them (x or y) has to be negative.

Statement 1:
x^2/y < 0;
x^2 can never be negative; so y is negative.
But even x can be negative. We don't know nethin about x. So Insufficient

Statement 2:
x^9(y^3)^3 < (x^2)^4(y^8)
= x^9.y^9 < x^8.y^8

We know x^8.y^8 can only be positive. We divide both sides with it. This gives us:

xy < 1

Again not enough information. We want is xy < 0. So again Insufficient

Statements Together,

y is negative and xy < 1

Not sufficient because x can be -ve and xy < 1. We can't assume x and y to be integers xy can be 0.6 and 0.4 or -0.6 and -0.4 and still satisfy and conditions.

So Insufficient

So : E

Again I am not an expert just tryin my luck!!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 351
Joined: Mon Jul 04, 2011 10:25 pmFollowed by: 4 members
Thanked: 57 times

by akhilsuhag » Sun Aug 07, 2011 5:54 am
Can we have the OA plz!!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Senior | Next Rank: 100 Posts
Posts: 87
Joined: Mon Jun 30, 2008 5:44 amFollowed by: 2 members
Thanked: 14 times

by ronaldramlan » Sun Aug 07, 2011 7:36 am
OA is E
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1