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If 20 percent of the members in club A are members of club B also, [#permalink]
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24 Nov 2005, 01:07
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If 20 percent of the members in club A are members of club B also, which club has more members? (1) 30 percent of the members of B are members of A also. (2) A has 600 members.
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Re: If 20 percent of the members in club A are members of club B also, [#permalink]
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24 Nov 2005, 01:15
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If 20 percent of the members in club A are members of club B also, which club has more members?
1). 30 percent of the members of B are members of A also.
2). A has 600 members.
X = number of members in club A
Y = number of members in club B
1)
0.2X = 0.3Y
X = 3/2Y
X > Y
Sufficient
2)
X = 600
Insufficient
Thus, (A).
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Re: If 20 percent of the members in club A are members of club B also, [#permalink]
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22 Nov 2014, 03:39
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Re: If 20 percent of the members in club A are members of club B also, [#permalink]
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11 Dec 2014, 13:16
gamjatang wrote: If 20 percent of the members in club A are members of club B also, which club has more members? 1). 30 percent of the members of B are members of A also. 2). A has 600 members.
X = number of members in club A Y = number of members in club B
1)
0.2X = 0.3Y X = 3/2Y X > Y Sufficient
2) X = 600 Insufficient
Thus, (A). and um...what if club A has 1000 members and B has 100?



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Re: If 20 percent of the members in club A are members of club B also, [#permalink]
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12 Dec 2014, 03:51
saadis87 wrote: gamjatang wrote: If 20 percent of the members in club A are members of club B also, which club has more members? 1). 30 percent of the members of B are members of A also. 2). A has 600 members.
X = number of members in club A Y = number of members in club B
1)
0.2X = 0.3Y X = 3/2Y X > Y Sufficient
2) X = 600 Insufficient
Thus, (A). and um...what if club A has 1000 members and B has 100? A = 1000 and B = 100 would contradict info given in the stem. We are told that 20% of the members in club A are members of club B also, if there are 100 people in A, then it means that 200 of them are members of B too. Thus B cannot have less than 200 members. From the stem we have that {Both} = 0.2A. (1) says that {Both}= 0.3B, hence 0.2A = 0.3B > A/B = 3/2 > A > B. Hope it's clear.
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Re: If 20 percent of the members in club A are members of club B also, [#permalink]
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18 Jun 2015, 20:14
0.2X = 0.3Y is wrong, because it is not same , as it is not given those 20 % and 30 percent are common to both...



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Re: If 20 percent of the members in club A are members of club B also, [#permalink]
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18 Jun 2015, 23:37



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Re: If 20 percent of the members in club A are members of club B also, [#permalink]
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20 Jul 2016, 01:37
Hello from the GMAT Club BumpBot! Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up  doing my job. I think you may find it valuable (esp those replies with Kudos). Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
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Re: If 20 percent of the members in club A are members of club B also, [#permalink]
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01 Sep 2017, 12:01
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1)0.2a = 0.3b a = 3/2b a > b Sufficient
2) a = 600 b = ? insufficient A it is




Re: If 20 percent of the members in club A are members of club B also,
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