Subject

    Quantitative Aptitude

    Topic

    Percentage

    The sum of the number of boys and girls in a school is 150. if the number of boys is x, then the number of girls becomes x% of the total number of students. The number of boys is :

    ক)
    70
    খ)
    80
    গ)
    90
    ঘ)
    60

    Explanation

    We have : x + (x% of 150 )= 150 => x+(x ÷\div 100) ×\times 150] = 150 => 52x  =  150\frac52x\;=\;150 => x = (150 ×\times 2) ÷\div 5 = 60

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