Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 25 May 2017, 00:26

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# IS |X-Y| > |x| -|y| 1) y<x 2)xy<0

Author Message
Manager
Joined: 18 Jun 2007
Posts: 67
Followers: 1

Kudos [?]: 30 [0], given: 0

IS |X-Y| > |x| -|y| 1) y<x 2)xy<0 [#permalink]

### Show Tags

30 Sep 2007, 00:07
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

IS |X-Y| > |x| -|y|

1) y<x
2)xy<0
VP
Joined: 09 Jul 2007
Posts: 1102
Location: London
Followers: 6

Kudos [?]: 110 [0], given: 0

### Show Tags

30 Sep 2007, 01:58
tlntd42 wrote:
IS |X-Y| > |x| -|y|

1) y<x
2)xy<0

http://www.gmatclub.com/forum/t52479
Intern
Joined: 28 Sep 2007
Posts: 1
Followers: 0

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

IS |X-Y| > |x| -|y| [#permalink]

### Show Tags

30 Sep 2007, 06:53
Lets consider 1) y < x.
if x is 3, y could be 2 or less.
|x-y| IS |3-2| = 1
|X| - |y| = 1 . so the equation is not true .
However if y is negative eg -1. |X-Y| |3 - (-1)) = |4| = 4
|X| - |Y| = 3 - 1 = 2. the equation is true.
So A is not sufficient to answer the question.

Lets try B alone. xy <0.
here if x is < 0 y is +ve. if y is less than 0, X is +ve. both cannot be less than 0.
case: x <0
eg : x= -1; y = 1
|X-Y| = |-2| = 2; |X| - |y| = 1 -1 = 0 so the equation is true
eg x = -5 ; y = 10
|X-Y| = |-15| =15; |X| - |y| = -5 so the equation is true.

case y < 0
eg: x = 1; y = -1
|X-Y| = |2| = 2; |X| - |y| = 1 - 1 = 0; so equation is true
eg x = 5 ; y = -10
|X-Y| = |15| = 15; |X| - |y| = 5 - 10 = -5; so equation is true

so in both cases B satisifies the equations.

Director
Joined: 03 May 2007
Posts: 876
Schools: University of Chicago, Wharton School
Followers: 6

Kudos [?]: 209 [0], given: 7

### Show Tags

30 Sep 2007, 08:44
tlntd42 wrote:
IS |X-Y| > |x| -|y|

1) y<x
2)xy<0

Should be B. if xy<o, then x and y have different signs, which is suff.

1 is not suff cux x and y could have same signs.
Re: DS-ineq   [#permalink] 30 Sep 2007, 08:44
Display posts from previous: Sort by