Multiple Choice Questions on The ratio of number of boys to the number of girls in a school of 432 pupils is 5 4 When some new bo........... for SSC CGL Exam Preparation

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Multiple Choice Questions

The ratio of number of boys to the number of girls in a school of 432 pupils is 5 4 When some new bo...........

Quantitative Aptitude (CGL) Ratio, Proportion
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    The ratio of number of boys to the number of girls in a school of 432 pupils is 5 : 4. When some new boys and girls are admitted, the number of boys

    increase by 12 and the ratio of the boys to girls changes to 7 : 6. The number of new girls admitted is

    12

    Incorrect Answer

    14

    Incorrect Answer

    24

    Correct Answer

    20

    Incorrect Answer
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    Explanation:

    B : G = 5 : 4
    9 -> 432
    1 -> 48
    Boys=5×48=240
    Girls=48×4=192
    Now Total No. of boys = 240 + 12 = 252
    B/G= let the no. of girls be added is
    B/G=7/6
    252/192+x=7/6
    216 = 192 + x
    x = 24

    By: MIRZA SADDAM HUSSAIN
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