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21 October, 23:29

There are 120 children there are twice as many boys than girls how many girls are there?

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  1. 21 October, 23:38
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    Boys are b

    Girls are g

    b + g = 120

    2g = b

    Substitute the second equation into the first

    2g + g = 120

    3g = 120

    g = 40

    Plug in g = 40 and solve for b

    b + g = 40

    b + 40 = 120

    b = 80

    There are 40 girls and 80 boys.
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