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Railways Sample Paper RRB (Group D) Sample Test Paper-10

  • question_answer
    A piece of work was finished by A, B, and C together. A and B together finished 60% of the work and B and C together finished 70% of work. Who among the three is the most efficient?

    A)  A                    

    B)  B

    C)  C                    

    D)  A or B

    Correct Answer: C

    Solution :

    [c] According to question, A+B=60% \[\therefore \] (A+B)+ (B+C)-(A+B+C) =B (60+70-100) =30 \[\therefore \] B=30% A =30% and C=40% Hence, C is most efficient.


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