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The ratio of boys to girls in a group is 7:2. If there are 70 more boys than girls, work out how many people there are in total.

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  1. 2 May, 16:10
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    126

    Step-by-step explanation:

    Boys: girls = 7:2

    No. of boys = 7x

    No. of girls = 2x

    7x - 2x = 70

    5x = 70

    x = 70/5

    x = 14

    No. of boys = 7x = 7*14 = 98

    No. of girls = 2x = 2*14 = 28

    Total = 98 + 28 = 126
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