statistics

a computer teacher has 20 students 8 who are women and 12 are men. her other class has 30 people how many must be women so that both classes have the same ratio of women to men

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asked by gigio
  1. if class1 has a ratio of women:students as 8:20 = .40, then class2 must have equal probability.

    So then
    .40 = x/30
    x = 12

    so class2 must have 12 female students

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