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17 June, 00:38

At a school number of boy:number of girls is in the ratio 11:9

there are 124 more boys than girls

work out the total number of sutdents at the school

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  1. 17 June, 01:13
    0
    1240 (I'm not so sure but per my calculation that is what i got)

    Step-by-step explanation:

    Boy : Girl

    11 : 9

    124 + x : x

    11/9 = 124 + x / x

    9 (124 + x) = 11 x

    1116 + 9x = 11x

    1116 = 11x - 9x

    1116 = 2x

    x = 558

    Thus, there are 558 girls in the school

    Number of boys = 124 + x

    = 124 + 558

    = 682

    Therefore, total number of students = 558 + 682 = 1240 students
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