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Tv & Cars-GMATPREP2

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Source: — Data Sufficiency |
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Re: Tv & Cars-GMATPREP2

by parallel_chase » Wed Aug 27, 2008 1:59 pm
medea66 wrote:Couldn't you use sts. 1&2 to see who has a TV and then add: TV, Car, Car & TV, Neither = total and then find "Neither"?
Even after combining both we dont know how many people own just TV.

Therefore we have 2 unknowns i.e. neither TV nor car & only TV.

Hence E is the answer.
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by LSB » Wed Aug 27, 2008 4:53 pm
This is the logic

3000 = Car only + TV Only + Both + Neither

The two statements together give you "Car only" and "both"

From that you can tell that

"Car Only" = 10
"Both" = 2970
TV Only + Neither = 20

We don't have enough infor to split the last term into "TV Only" and "Neither"
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