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SSC Quantitative Aptitude Average Question Bank Average (II)

  • question_answer
    The average of three numbers is 154. The first number is twice the second and the second number is twice the third. The first number is

    A) 264

    B) 132

    C) 88

    D) 66

    Correct Answer: A

    Solution :

    [a] Let third number = x Then, second number = 2x And first number = 4x Now, average of these three numbers =154 \[\Rightarrow \]   \[x+2x+4x=3\times 154\] \[\Rightarrow \]   \[7x=3\times 154\]\[\Rightarrow \]\[x=3\times 22=66\] Thus, first number \[=4\times 66=264\]


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