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Railways R.R.C. (Gorakhpur) Solved Paper Held on 1st Shift 9-11-2014

  • question_answer
    If the length, width and height of a room are increased 10%, 20% and 30% respectively, how much will its volume increase?

    A) 60%                             

    B) 71.6%

    C) 66.66%            

    D) 30%

    Correct Answer: B

    Solution :

    Volume increase\[=\frac{110\times 120\times 130}{100\times 100}-100\] \[=171.6-100\] \[=71.6%\]


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