Find all School-related info fast with the new School-Specific MBA Forum

It is currently 22 Sep 2014, 06:57

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

If x-y>10, is x-y>x+y?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
User avatar
Joined: 12 Mar 2009
Posts: 192
Followers: 1

Kudos [?]: 87 [0], given: 60

GMAT Tests User
If x-y>10, is x-y>x+y? [#permalink] New post 04 Oct 2009, 00:53
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

53% (02:13) correct 47% (01:00) wrong based on 42 sessions
If x - y > 10, is x - y > x + y?

(1) x = 8
(2) y = -20
[Reveal] Spoiler: OA
Senior Manager
Senior Manager
avatar
Joined: 31 Aug 2009
Posts: 422
Location: Sydney, Australia
Followers: 6

Kudos [?]: 109 [0], given: 20

GMAT Tests User
Re: Inequality from GMATPrep [#permalink] New post 04 Oct 2009, 01:38
Statement 1: x = 8. Solving x-y>10 equation you get y<-2.
Given y<0 any value for X will prove x-y > x+y
Sufficient

Statement 2: y = -20. Sufficient for same reason as Statement 1.

Answer = D.

I'm not sure if this is the best way to solve though...
Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23509
Followers: 3513

Kudos [?]: 26657 [1] , given: 2714

Re: Inequality from GMATPrep [#permalink] New post 04 Oct 2009, 04:10
1
This post received
KUDOS
Expert's post
Manager
Manager
avatar
Joined: 03 Jun 2010
Posts: 184
Location: United States (MI)
Concentration: Marketing, General Management
WE: Business Development (Consumer Products)
Followers: 4

Kudos [?]: 22 [0], given: 40

GMAT ToolKit User GMAT Tests User
Re: Inequality from GMATPrep [#permalink] New post 14 Jul 2010, 23:49
Seems, i got problem with it.
(1) x=8, y=5, then 8-5>8+5 wrong
x=8, y=-5, then 8--5>8-5 right
so A looks unsuff
(2)y=-20
from x-y>x+y we have y<0 suff
Looks like (B)
Manager
Manager
avatar
Joined: 22 Jun 2010
Posts: 57
Followers: 1

Kudos [?]: 10 [0], given: 10

Re: Inequality from GMATPrep [#permalink] New post 15 Jul 2010, 03:59
ulm wrote:
Seems, i got problem with it.
(1) x=8, y=5, then 8-5>8+5 wrong
x=8, y=-5, then 8--5>8-5 right
so A looks unsuff
(2)y=-20
from x-y>x+y we have y<0 suff
Looks like (B)


If you know that x=8, you know that y has to be negative!!
--> Because: x-y>10

If x is 8 and some number is subtracted and you get a number >10, the subtracted number has to be <-2

Hence you CANNOT choose 5 for y as you did!



Hope this helps.
Manager
Manager
avatar
Joined: 16 Feb 2010
Posts: 225
Followers: 2

Kudos [?]: 69 [0], given: 16

GMAT Tests User
Re: Inequality from GMATPrep [#permalink] New post 15 Jul 2010, 06:11
ulm wrote:
Seems, i got problem with it.
(1) x=8, y=5, then 8-5>8+5 wrong
x=8, y=-5, then 8--5>8-5 right
so A looks unsuff
(2)y=-20
from x-y>x+y we have y<0 suff
Looks like (B)



if x = 8 and y = 5,
then x-y>10 (WHICH IS A GIVEN !!!) is not fulfilled.........
Re: Inequality from GMATPrep   [#permalink] 15 Jul 2010, 06:11
    Similar topics Author Replies Last post
Similar
Topics:
Is xy + xy < xy? Manhnip 0 05 Jun 2013, 14:12
4 Experts publish their posts in the topic Is xy + xy < xy ? mun23 5 02 Mar 2013, 12:03
2 IF x-y > 10 is x-y > x+y ? 1) x = 8 2) y = -20 bhatiagp 9 15 Apr 2008, 09:56
If X-Y > 10 is X-Y>X+Y 1) X = 8 2) Y = -20 All the axl_oz 3 02 Jun 2006, 08:40
Is x-y+1>x+y-1 1- x>0 2- y<0 desiguy 3 08 Nov 2005, 14:50
Display posts from previous: Sort by

If x-y>10, is x-y>x+y?

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.