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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-21

  • question_answer
    Average age of A, B and C is 36 yr. if average age of 6 and C is 30 yr and age of 8 is 22 yr, then what is the sum of the ages of A and C?

    A)  68 yr   

    B)  86 yr

    C)  58 yr               

    D)  61 yr

    Correct Answer: B

    Solution :

    Average age of A, 6 and C = 36 yr Total age of AS and \[C=36\times 3=108\,\,yr\]yr Average age of 8 and C = 30 yr Total age of B and\[C=30\times 2=60\,\,yr\] \[\therefore \]      Age of A\[=108-60=48\,\,yr\] Age of B = 22 yr Age of \[C=60-22=38\,\,yr\] \[\therefore \]Total age of A and \[C=48+38=86\,\,yr\]


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