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Railways R.R.C. (Kolkata) Solved Paper Held on 17-11-2013

  • question_answer
    The length of a rectangle is increased by 10% and breadth decreased by 10%. Then, the area of new rectangle is ?

    A) neither increased nor decreased

    B) increased by 1 %

    C) decreased by 1%

    D) decreased by 10%

    Correct Answer: C

    Solution :

    Required percentage change in the area of new rectangle \[=\left[ 10-10+\frac{(10)(-10)}{100} \right]%\] \[=1%\] Negative sign shows decrease.


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