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A marketing survey found that all participants had subscriptions to a

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Math Expert
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Joined: 02 Sep 2009
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A marketing survey found that all participants had subscriptions to a  [#permalink]

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New post 22 Mar 2017, 03:37
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

83% (01:55) correct 17% (01:30) wrong based on 56 sessions

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A marketing survey found that all participants had subscriptions to a magazine, a newspaper, or a book club. Of the participants, 30% subscribed to a magazine, 50% subscribed to a newspaper, and 20% subscribed to a book club. How many people subscribed to two or more publication types?

(1) Of the 100 people surveyed, everyone that subscribed to a book club also subscribed to a newspaper.
(2) Of the 100 people surveyed, anyone who subscribed to a magazine didn't subscribe to any other publication type.

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Marshall & McDonough Moderator
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Joined: 13 Apr 2015
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Re: A marketing survey found that all participants had subscriptions to a  [#permalink]

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New post 22 Mar 2017, 18:54
Let Mag = 30; Npaper = 50 and Bclub = 20

St1: BClub and Npaper = 20 --> Not sufficient as we do not know the share between (Mag and Npaper) and (Mag and BClub)

St2: (Mag and BClub) and (Mag and Npaper) = 0 --> Not Sufficient as we do not know Bclub and Npaper.

Combining St1 and St2,
People subscribed to 2 or more publications = 20 + 0 = 20.

Answer: C
Director
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GMAT 1: 700 Q50 V34
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Re: A marketing survey found that all participants had subscriptions to a  [#permalink]

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New post 22 Mar 2017, 22:12
Bunuel wrote:
A marketing survey found that all participants had subscriptions to a magazine, a newspaper, or a book club. Of the participants, 30% subscribed to a magazine, 50% subscribed to a newspaper, and 20% subscribed to a book club. How many people subscribed to two or more publication types?

(1) Of the 100 people surveyed, everyone that subscribed to a book club also subscribed to a newspaper.
(2) Of the 100 people surveyed, anyone who subscribed to a magazine didn't subscribe to any other publication type.
..


C = we will get 20 ...
i found Venn Diagram approach easier ....
GMAT Club Bot
Re: A marketing survey found that all participants had subscriptions to a   [#permalink] 22 Mar 2017, 22:12
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