math

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franklin school has 3 boys for every 4 girls in the fifth grade.there is 140 students in the fifth grade.

A. how many are boys and how many are girls??? pleassseee helpppp meeeeee!!!!

  • math -

    Let x = number of boys

    3/7 = x/140

    7x = 420

    x = 60

  • math -

    3:4 add 4+3= 7. 140/7 =20.

    3 X 20 = 60
    4 x 20 = 80

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