It is currently 23 Mar 2018, 11:57

### 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

# GMATprep DS

Author Message
Director
Joined: 29 Aug 2005
Posts: 835

### Show Tags

10 Apr 2009, 12:44
00:00

Difficulty:

(N/A)

Question Stats:

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

### HideShow timer Statistics

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

Attachments

quant 31.jpg [ 4.97 KiB | Viewed 1079 times ]

Manager
Joined: 19 Aug 2006
Posts: 232

### Show Tags

10 Apr 2009, 18:44
IMO D.

rewriting question stem: |x-z|=|z|-|x| ?

stmnt1 - z<x, which means y>0 and x<0 and z<0.
picking numbers will show you that the question stem is always true
sufficient

stmnt 2 - y>0, which means x<0 and z<0
same as stmnt 1
sufficient
Senior Manager
Joined: 08 Jan 2009
Posts: 317

### Show Tags

10 Apr 2009, 18:59
Given
then |x-z| + |x| = |z|

the above eqn will hold good only when z<x<0

Stmt 1 :
z < x then y needs >0 and z and x < 0 for zy<xy <0 . Hence sufficient
Stmt 2:

y >0 then x<z<0 for zy<xy <0 . Hence sufficient

Ans D
Current Student
Joined: 13 Jan 2009
Posts: 351
Location: India

### Show Tags

11 Apr 2009, 03:54
Outcome of the result will depend on

zy-xy<0 so each one is suff.
GMAT Tutor
Joined: 24 Jun 2008
Posts: 1346

### Show Tags

11 Apr 2009, 17:17
tkarthi4u wrote:
Given
then |x-z| + |x| = |z|

the above eqn will hold good only when z<x<0

The equation is not 'only' true when z < x < 0. It's also true if 0 < x < z. This is one of the strangest questions in GMATPrep, because you don't even need the statements to answer the question -- if zy < xy < 0, the answer to the question is certainly 'yes'.
_________________

GMAT Tutor in Toronto

If you are looking for online GMAT math tutoring, or if you are interested in buying my advanced Quant books and problem sets, please contact me at ianstewartgmat at gmail.com

SVP
Joined: 29 Aug 2007
Posts: 2452

### Show Tags

12 Apr 2009, 07:09

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________

Gmat: http://gmatclub.com/forum/everything-you-need-to-prepare-for-the-gmat-revised-77983.html

GT

Re: GMATprep DS   [#permalink] 12 Apr 2009, 07:09
Display posts from previous: Sort by