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sally has a bag with red,blue, and green marbles. She has twice as many blue marbles as red marbles. She has 5 times as many green marbles as red marbles. Altogether she has 24 marbles. How many of each color marble does she have? Explain how you found your answer.

  • math -

    r+b+g=24
    g = 5r
    b = 2r

    r+2r+5r = 24
    8r = 24
    r=3

    so, 3 red, 6 blue, 15 green

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