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Math Help - In a certain class room

  1. #1
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    In a certain class room

    Question : In a certain class , consisting of 60 boys and 40 girls, it is observed that 24 boys and 16 girls wear eyeglasses. What is the probability that a student picked at random wears eyeglasses , given that the student is a girl .
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  2. #2
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    What have you tried Zorro - this is an incredibly basic question.
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  3. #3
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    Let A be the probabilty of wearing glasses and let B be the probabilty of being a girl

    Now P(A/B) = \frac{P(A\cap B)}{P(B)}
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  4. #4
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    ---------------------------------My work ------------------------------------

    Pr(E) : - Prob of eyeglases
    Pr(G) : - prob of girl
    P(E/G) = \frac{Pr(E \cap G)}{P(G)} = \frac{\frac{16}{100}}{\frac{40}{100}} = \frac{16}{40}= \frac{2}{5}.........Is this correct??????
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  5. #5
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    I like it

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  6. #6
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    Thanks young sky worker .........May the Force be with u
    Cheers
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  7. #7
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    I'm pretty sure it's Skywalker..

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  8. #8
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    ya it is sorry for the typo
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