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Railways Sample Paper RRB (Group D) Sample Test Paper-6

  • question_answer
    A batsman in his 12th innings makes a score of 63 runs and there by increases his average scores by 2. What is his average after the 12th innings?

    A)  13       

    B)  41

    C)  49                   

    D)  87

    Correct Answer: B

    Solution :

    [b] Let the average of batsman after 11th  innings = A \[\frac{\begin{align}   & Total\,\,score\,\,made\,\,by\,\,bastman\,\, \\  & \,\,\,\,at\,\,the\,\,end\,\,of\,\,11th\,\,innings \\ \end{align}}{11}=A\] \[\therefore \]Total score after 11th innings =11 A \[Now,\,\,\frac{\begin{align}   & Total\,\,score\,\,after\,\,11th\,\,inn\operatorname{ings}\, \\  & +score\,\,made\,\,in\,\,12th\,\,innings \\ \end{align}}{12}=A+2\]\[\Rightarrow 11\,\,A+63=(A+2)\times 12\] \[\Rightarrow 11A-12A=24-63\] \[\Rightarrow \,\,\,A=39\] 12th innings average = 39+2=41


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