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in a class, the ratio of boys to girls is 3/4. if there are 12 boys in the class, how many girls are there

  • math -

    for every 3 boys there is 4 girls
    divide 12 by 3 and the answer is 4
    multiply 4 by 4
    16 This will be your answer

  • math -

    Set up a proportion. Let x = the number of girls.

    3 / 4 = 12 / x

    Cross multiply:

    3x = 48
    x = 16

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