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Chaitanya_1986: Master | Next Rank: 500 Posts; Posts: 183; Joined: Sat Apr 16, 2011 11:29 am; Thanked: 7 times; Followed by:2 members

no of members

by Chaitanya_1986 » Thu May 12, 2011 8:38 pm

All of the members of club Y are either Democrats or Republicans. If 21of the male members and 53of the female members are Democrats, what is the ratio of the number of males to the number of females in the club?
(1) In club Y the number of female members is one less than the number of male members.
(2) In club Y the number of male Republican members is equal to the number of female Democratic members.

OA B

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Source: Beat The GMAT — Data Sufficiency | Thu May 12, 2011 8:38 pm

manpsingh87: Master | Next Rank: 500 Posts; Posts: 436; Joined: Tue Feb 08, 2011 3:07 am; Thanked: 72 times; Followed by:6 members

by manpsingh87 » Thu May 12, 2011 9:28 pm

Chaitanya_1986 wrote:All of the members of club Y are either Democrats or Republicans. If 21of the male members and 53of the female members are Democrats, what is the ratio of the number of males to the number of females in the club?
(1) In club Y the number of female members is one less than the number of male members.
(2) In club Y the number of male Republican members is equal to the number of female Democratic members.

OA B

let no. of male members=m, female member=f;

democratic male=21; democratic female=53;
republican male=m-21; republican female=f-53;

1) m-f=1; we can not find the answer on the basis of this information; hence 1 alone is not sufficient to answer the question..!!

2) now as per given information; m-21=53; m=74;
as we don't have information about the no. of female republicans therefore 2 alone is also not sufficient to answer the question.

combining 1 and 2;
74-f=1; f=73; therefore required ratio is m/f=74/73 hence answer should be C

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Whitney Garner: GMAT Instructor; Posts: 273; Joined: Tue Sep 21, 2010 5:37 am; Location: Durham, NC; Thanked: 154 times; Followed by:74 members; GMAT Score:770

by Whitney Garner » Fri May 13, 2011 9:25 am

Chaitanya_1986 wrote:All of the members of club Y are either Democrats or Republicans. If 21of the male members and 53of the female members are Democrats, what is the ratio of the number of males to the number of females in the club?
(1) In club Y the number of female members is one less than the number of male members.
(2) In club Y the number of male Republican members is equal to the number of female Democratic members.

OA B

Chaitanya_1986

There is a miss-type in the original post. The question actually reads:

If 1/2 of the male members and 3/5 of the female members are Democrats....

Therefore the OA B originally listed is correct. We definitely want to be careful when posting questions to make sure that we copy them exactly

I hope this clears up the confusion!

Whit

Whitney Garner
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www.whitneygarner.com

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