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SSC Sample Paper SSC CGL - Sample Paper-26

  • question_answer
    Of the three numbers whose average is 60, the first is one fourth of the sum of the other The first number is

    A) 30                                

    B) 36       

    C) 42                                

    D) 45

    Correct Answer: B

    Solution :

    Let the numbers are x, y and 2 According to question, \[x+y\text{ + }z=180\]                          ?(i) And      \[x=\frac{1}{4}(y+z)\] \[\Rightarrow \]   \[4x=y+z\]                                ?(ii From Eqs. (i) and (ii) \[\Rightarrow \]   \[4x+x\text{ }=180\] \[\Rightarrow \]   \[x=\frac{180}{5}=36\]


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