Multiple Choice Questions on The ratio of the number of boys to that of girls in a school is 3 2 If 30 of boys and 70 of girls ap........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The ratio of the number of boys to that of girls in a school is 3 2 If 30 of boys and 70 of girls ap...........

Quantitative Aptitude ( CCS) Ratio, Proportion
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    The ratio of the number of boys to that of girls in a school is 3:2. If 30% of boys and 70% of girls appeared in an examination, the ratio of students appeared in the examinations to that not appeared in the examination is

     

    23:27
     

    Correct Answer

    22:25
     

    Incorrect Answer

    21:17
     

    Incorrect Answer

    18:17

    Incorrect Answer
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    Explanation:

    3:2 = 30:20
    30% boys = (30/100) × 30= 9
    70% girls = (70/100) × 20 = 14
    (9+14) : (50-23) = 23 : 27

    By: Sandeep Dubey
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