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Marketing survey

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Manager
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Marketing survey [#permalink] New post 10 May 2008, 09:20
Can anyone help me with this question?
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Manager
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Re: Marketing survey [#permalink] New post 10 May 2008, 10:03
I will take a shot.

Here's the question:
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Senior Manager
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Schools: R1:Cornell, Yale, NYU. R2: Haas, MIT, Ross
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Re: Marketing survey [#permalink] New post 10 May 2008, 10:04
Hi, I would go with answer C 30%

Ppl using only A = 400-(125+75+125)=75

Ppl using only B = 400-(125+75+100)=100

Ppl using A and B but not C= 125

% Result = (Ppl using A,B and both A and B but not C/ Total number of ppl surveyed )*100


= 75+100+125/1000 *100
= 300/1000 *100 =30%
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Re: Marketing survey [#permalink] New post 10 May 2008, 10:08
You know that A = 400

You know that B = 400

You do not want anything associated with C.

So...

A = 400 - 125 - 75 -125 (I am trying to find only those that are in A only)

A = 400 - 325 = 75

B = 400 - 125 - 75 -100 (I am trying to find only those that are in B only)

B = 400 - 300 = 100

So...

A + B = 75 + 100 = 175

You can also add in those that use products A & B together, and by the circles that number is 125 (A U B)

So....

175 + 125 = 300

There were 1,000 people surveyed. 300 / 1,000 = 30%

I choose C.
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Re: Marketing survey [#permalink] New post 11 May 2008, 14:38
You are right!
OA is 30%
Re: Marketing survey   [#permalink] 11 May 2008, 14:38
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