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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-14

  • question_answer
    In class X of a school there are three sections namely A, B and C. The ratio of students in sections A and B is 3:5 and that in sections B and C is 4 :7. If the total number of students in the class is 134, then the number of students in section A is

    A)  36       

    B)         48

    C)  24                   

    D)  20

    Correct Answer: C

    Solution :

    \[A:B:\,\,=3:5\] \[B:C=4:7\] \[\therefore \]\[A:B:C=3\times 4:5\times 4:5\times 7\] \[=12:20:35\] Sum of the ratio = 12 + 20 + 35 = 67 \[\therefore \]Number of students in section A \[\,=\frac{12}{67}\times 134=24\]


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