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24 January, 08:14

The ratio of boys to girls on a swimming team is 3 to 4. the team has 70 members. how many are boys?

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  1. 24 January, 10:13
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    Number of boys are 30

    Assume number of boys (X), Number of Girls (Y)

    X + Y = 70 (1)

    X/Y = 3/4

    Y = 4/3X (2)

    replacing the value of Y in (2) in number (1)

    X + 4X/3 = 70

    7X/3 = 70

    7X = 210

    X = 30

    so number of boys = 30 boys
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