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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-7

  • question_answer
    The average age of 24 boys in a class is 11. When the teacher's age is included, the average increases by one. What is the age of the teacher?

    A)  34 years                      

    B)  42 years

    C)  36 years            

    D)       48 years

    Correct Answer: C

    Solution :

     24 boys + Teacher  \[\equiv \,\,\,12\,\,\,\,\,\,25\]                    \[=300\] years 24 boys \[\equiv \,\,24\,\,\,\,\,\,11\,=264\] years \[\therefore \] Teacher's age \[=(300-264)\]  years \[=36\] years


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