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A Question from DS, OG 12

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by becnil » Thu Feb 11, 2010 1:17 pm
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.

Please explain your answer. Thanks much.
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Source: — Data Sufficiency |
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by ajith » Thu Feb 11, 2010 1:32 pm
becnil 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.

Please explain your answer. Thanks much.
Say there are x members in club X and y members in club Y

1. X ∩ Y = 0.2 x - insufficient
2. X ∩ Y = 0.3 y - insufficient

Combined => 0.2x = 0.3y
x/y = 3/2
x>y

Hence C
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by becnil » Thu Feb 11, 2010 2:04 pm
Thank You Ajith..that is good.
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