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rissyroo118

  • one year ago

Mary Katherine has a bag of 3 red apples, 5 yellow apples and 4 green apples. Mary takes a red apple out of the bag and does not replace it. What is the probability that the next apple she takes out is yellow? A) 5 44 B) 4 11 C) 5 12 D) 5 11 @Kash_TheSmartGuy

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  1. Kash_TheSmartGuy
    • one year ago
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    A.

  2. Vocaloid
    • one year ago
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    @rissyroo118: actually, the previous answer is incorrect (no offense intended!) ok, so there were originally 5 yellow apples and 12 total apples (3+5+4) = 12, correct? one red apple was taken away, so that leaves us with 5 yellow apples and 11 total apples probability of getting a yellow apple = #of yellow apples/# of total apples

  3. rissyroo118
    • one year ago
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    so C 5/12?

  4. Vocaloid
    • one year ago
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    nope, please try again: there were 12 apples at the beginning. Mary took away 1 apple, so how many apples were left?

  5. Kash_TheSmartGuy
    • one year ago
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    wait so we divide the fractions or do we multiply them? I think we multiply them.

  6. Vocaloid
    • one year ago
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    @Kash_TheSmartGuy : nope, no multiplication here. the question is NOT asking "what is the probability of getting a yellow apple on both tries", it's only asking for the probability of picking a yellow apple after the first red apple is taken away

  7. Vocaloid
    • one year ago
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    @rissyroo118 : anyway, would you mind answering my question? how many apples are left after Mary takes away one red apple?

  8. rissyroo118
    • one year ago
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    would make 11 apples left if mary took one

  9. Vocaloid
    • one year ago
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    right!, so how many yellow apples are there, and how many total apples are there?

  10. rissyroo118
    • one year ago
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    5 yellow all together 11 apples so 5 / 11 = D

  11. Vocaloid
    • one year ago
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    Great! Excellent work. :)

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