Math

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There are 150 green marbles and 100 yellow marbles in a bag that contains 250 marbles. If only yellow marbles are added to the bag so that the probability of randomly drawing a yellow marble from the bag becomes 3/5, how many yellow marbles are in the bag?

  • Math -

    g = 150
    y = 100 + x

    total = 100 + x + 150 = 250+x
    (100 + x) /(250+x) = 3/5

    5(100+x) = 3(250+x)

  • Math -

    x = 125

  • Math -

    yes

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