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

It is currently 02 Sep 2014, 01:50

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

DS: percentage increase/decrease

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
User avatar
Joined: 22 Feb 2006
Posts: 97
Followers: 1

Kudos [?]: 5 [0], given: 0

DS: percentage increase/decrease [#permalink] New post 25 Aug 2009, 15:39
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 2 sessions
Please, explain your answer. Thank you,
-------------------------------------------
Q29:
The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997?

(1) x > y
(2) xy/100 < x – y

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.
1 KUDOS received
Senior Manager
Senior Manager
avatar
Joined: 23 Jun 2009
Posts: 360
Location: Turkey
Schools: UPenn, UMich, HKS, UCB, Chicago
Followers: 5

Kudos [?]: 95 [1] , given: 60

GMAT Tests User
Re: DS: percentage increase/decrease [#permalink] New post 26 Aug 2009, 03:48
1
This post received
KUDOS
1997=100
1998=100+x
1999=(100+x)*(100-y)/100
problem asks
does 1999>1997?
i.e.
does
(100+x)*(100-y)/100>100
10000+100x-100y-xy>10000
100x-100y-xy>0
100x>100y+xy
So
I)x>y is INSUFF, because we don't know how much bigger. Does x bigger than y that offsets xy/100? i.e.
x=%30, y=%25
1998=%130
1999=%87,5
x=%30, y=%10
1998=%130
1999=%117
II)SUFF
xy/100<x-y
xy<100x-100y
xy+100y<100x
this is our inequality.
Answer is B.
Senior Manager
Senior Manager
avatar
Joined: 18 Aug 2009
Posts: 439
Schools: UT at Austin, Indiana State University, UC at Berkeley
WE 1: 5.5
WE 2: 5.5
WE 3: 6.0
Followers: 6

Kudos [?]: 48 [0], given: 16

GMAT Tests User
Re: DS: percentage increase/decrease [#permalink] New post 26 Aug 2009, 03:49
Need explanation for the question as well. Thanks
_________________

Never give up,,,

Intern
Intern
avatar
Joined: 18 Aug 2009
Posts: 8
Followers: 0

Kudos [?]: 0 [0], given: 4

Re: DS: percentage increase/decrease [#permalink] New post 26 Aug 2009, 22:28
Can this be solved by assuming values?
Manager
Manager
User avatar
Joined: 10 Jul 2009
Posts: 131
Location: Ukraine, Kyiv
Followers: 2

Kudos [?]: 31 [0], given: 60

Re: DS: percentage increase/decrease [#permalink] New post 20 Sep 2009, 04:43
I think maliyeci's way is the best one to approach this.
_________________

Never, never, never give up

Manager
Manager
avatar
Joined: 15 Sep 2009
Posts: 139
Followers: 1

Kudos [?]: 15 [0], given: 2

Re: DS: percentage increase/decrease [#permalink] New post 20 Sep 2009, 06:59
I wud go with option B.

statement ii alone is suff.
Re: DS: percentage increase/decrease   [#permalink] 20 Sep 2009, 06:59
    Similar topics Author Replies Last post
Similar
Topics:
DS - Percentage humans 2 01 May 2009, 06:37
1 DS - Percentage humans 4 01 May 2009, 06:29
DS on percentages TriColor 1 25 Aug 2007, 17:38
ds: Percentage mirhaque 1 03 May 2005, 05:28
DS:Percentage mirhaque 5 23 Mar 2005, 19:29
Display posts from previous: Sort by

DS: percentage increase/decrease

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

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®.