Is the number of members of Club X greater than the number : GMAT Problem Solving (PS)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 20 Jan 2017, 08:27

### 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 the number of members of Club X greater than the number

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Manager
Joined: 08 Oct 2005
Posts: 99
Followers: 1

Kudos [?]: 11 [1] , given: 0

Is the number of members of Club X greater than the number [#permalink]

### Show Tags

05 Aug 2006, 07:26
1
KUDOS
3
This post was
BOOKMARKED
00:00

Difficulty:

25% (medium)

Question Stats:

69% (01:43) correct 31% (00:46) wrong based on 77 sessions

### HideShow timer Statistics

Is the number of members of Club X greater than the number of members of Club Y ?

(1) Of the members of Club X, 20 percent are also members of Club Y.
(2) Of the members of Club Y, 30 percent are also members of Club X.

OPEN DISCUSSION OF THIS QUESTION IS HERE: is-the-number-of-members-of-club-x-greater-than-the-number-128641.html
[Reveal] Spoiler: OA

Last edited by Bunuel on 14 Aug 2012, 04:25, edited 1 time in total.
Senior Manager
Joined: 14 Jul 2005
Posts: 402
Followers: 1

Kudos [?]: 27 [0], given: 0

### Show Tags

05 Aug 2006, 09:03
E .

There is no mention about the number of members for each club...
Manager
Joined: 20 Mar 2006
Posts: 200
Followers: 1

Kudos [?]: 3 [0], given: 0

Re: PS-- the members of Club X [#permalink]

### Show Tags

05 Aug 2006, 10:12
ong wrote:
Is the number of members of Club X greater than the number of members of Club Y ?
(1) Of the members of Club X, 20 percent are also members of Club Y.
(2) Of the members of Club Y, 30 percent are also members of Club X.

Stem Is n(x) > n(y)

(1) x=100, y=80(20 from x) -> n(x) > n(y)

or x= 100, y=120(20 from x) --> n(y) > n(x)

Insuff BCE

(2) y=100, x=70(30 are from y) -> n(y) > n(x)
y= 100, x=130(30 are from y) -> n(x) > n(y)

Insuff CE

(1) & (2)
@ this point guessing E

Heman
SVP
Joined: 31 Jul 2006
Posts: 2304
Schools: Darden
Followers: 43

Kudos [?]: 475 [0], given: 0

### Show Tags

05 Aug 2006, 10:39
I'm guessing E. At 20% & 30%, there is no indication for the size relation between the two clubs.
Intern
Joined: 01 Jul 2006
Posts: 19
Followers: 0

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

Re: PS-- the members of Club X [#permalink]

### Show Tags

05 Aug 2006, 12:23
ong wrote:
Is the number of members of Club X greater than the number of members of Club Y ?
(1) Of the members of Club X, 20 percent are also members of Club Y.
(2) Of the members of Club Y, 30 percent are also members of Club X.

let there be Z number of members common to both
hence,
St 1 alone : Insuff.

St 2 alone : Insuff

Together
20% of X = Z = 30 % of Y
X/Y= 3/2 > 1

Hence C
Senior Manager
Joined: 22 May 2006
Posts: 371
Location: Rancho Palos Verdes
Followers: 1

Kudos [?]: 110 [1] , given: 0

Re: PS-- the members of Club X [#permalink]

### Show Tags

05 Aug 2006, 13:22
1
KUDOS
n(X)>n(Y)?

S1. n(XnY) = 0.2n(Y) insufficient.
S2. n(XnY) = 0.3n(X) insufficient.

Combine S1 and S2.
0.2n(Y) = 0.3n(X)
n(Y) = 1.5n(X)

n(X) < n(Y) = 1.5n(X) thus sufficient.(n(X) and n(Y) are positive integers)

C it is.
_________________

The only thing that matters is what you believe.

Intern
Joined: 27 May 2011
Posts: 6
Followers: 0

Kudos [?]: 23 [0], given: 6

Re: PS-- the members of Club X [#permalink]

### Show Tags

20 Jul 2011, 08:59
St 1 alone : Insuff.

St 2 alone : Insuff
For C
0.20x = 0.30y
x/y = 30/20 = 1.5 >1
so x>y.
Re: PS-- the members of Club X   [#permalink] 20 Jul 2011, 08:59
Similar topics Replies Last post
Similar
Topics:
2 If x and y are different prime numbers, each greater than 2, which of 2 17 Feb 2016, 03:38
16 If x is a prime number greater than 5, y is a positive 17 25 Oct 2012, 21:06
7 The number of the members of a club is more than 10 and less 5 26 Aug 2011, 11:42
12 If x and y are distinct prime numbers, each greater than 2, 9 13 Nov 2010, 10:09
2 If 5 less than x is 4 greater than y, then a number z that is 5 greate 3 15 Aug 2010, 13:59
Display posts from previous: Sort by

# Is the number of members of Club X greater than the number

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.