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SSC Sample Paper SSC CGL - Sample Paper-25

  • question_answer
    The height of a wall is six times its width and the length of the wall is seven times its height. If volume of the wall be 16128 cu m, its width is :

    A) 5 m                              

    B) 4 m

    C) 4.5 m               

    D) 6 m

    Correct Answer: B

    Solution :

    Let the width of a wall \[=x\,m\] \[\therefore \] The height of a wall \[=6x\,m,\] and length of a wall \[=42x\,m\] Volume of a wall \[=\text{ }42x\times 6x\times x\] \[\Rightarrow \]   \[{{x}^{3}}=\frac{16128}{42\times 6}\] \[\Rightarrow \]   \[{{x}^{3}}=64\] \[\Rightarrow \]   \[x=4\] \[\therefore \] The width of the wall \[=4\,m\]


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