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16 October, 17:19

The ratio of boys to girls in a certain classroom was 2 : 3. If boys represented five more than one third of the class, how many people were there in the classroom?

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  1. 16 October, 17:39
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    Let the no. Of boys=x and that of girls=y.

    The total no. Of students = x+y.

    As given by statement the no. Of boys=x={ (x+y) / 3} + 5

    This implies that

    X = (x+y+15) / 3

    Also we know that x/y = 2/3 therefore

    From this equation we get x=2y/3 and y=3x/2

    By method of substitution we get

    X = (x+3x/2+15) / 3

    •x = (15x+90) / 2

    •2x=15x+90

    •-13x=90

    X = - 90/13

    Now. Y = 3x/2=-270/26

    Therefore total

    no. Of students = - 270/26 + (-90/13)

    •no. Of students = - 450/26

    According to me this is an imaginary question i mean how can their be a negative person
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