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Math Help - Luxury homes

  1. #1
    Junior Member elenaas's Avatar
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    Luxury homes

    64%of the homes for sale have a garage, 21% have swimming pools, and 17% have both features.
    a.)If a home for sale has a garage, what's the probability that it has a pool too?

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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by elenaas View Post
    64%of the homes for sale have a garage, 21% have swimming pools, and 17% have both features.
    a.)If a home for sale has a garage, what's the probability that it has a pool too?

    If there are 100 houses how many have a garage, and how many have both?

    CB
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  3. #3
    Junior Member elenaas's Avatar
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    well... it is obvious that the answer is 17.
    Do you agree?
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  4. #4
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    suppose as has been suggested that you have sample of 100 houses. You have to pick one. Your constrain is that you have to pick one with garage. There are 64 of these houses. And in that new sample are 17 houses with pool too, so you can pick 17 houses from 64 to get correct one.
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