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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-3

  • question_answer
    The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest?                         

    A)  \[15\frac{1}{5}\]                  

    B)  14                    

    C)                                 \[14\frac{1}{5}\]              

    D)         15                              

    Correct Answer: A

    Solution :

    Average of rest two \[=\frac{15\times 12-14\times 2}{10}\] \[=\frac{180-28}{10}=15.2=15\frac{1}{5}\]


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