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SSC Sample Paper SSC (Group-C) Sample Test Paper-9

  • question_answer
    A set A consists of integers 27, 28. 30, 32 and 33. If integer k is included in the set, the average of set A will increase by 30%. What is the value of integer k?

    A)  68                              

    B)  79

    C)  84                  

    D)       92

    Correct Answer: C

    Solution :

     Average of set A \[=\frac{27+28+30+32+33}{5}\] \[=\frac{150}{5}=30\] Case II, New average \[=\frac{30\times 130}{100}=39\] \[\therefore \]    \[150+k=39\times 6=234\] \[\Rightarrow \]            \[k=234-150=84\]


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