Railways R.R.C. (Jabalpur) Solved Paper Held on 1st Shift 30-11-2014

  • question_answer 10) A discount series of 10%, 20% and 40% is equal to a single discount of?

    A) 70.28%            

    B) 70%

    C) 56.8%              

    D) 50%

    Correct Answer: C

    Solution :

    Single discount\[=\left( 100-\frac{90\times 80\times 60}{100\times 100} \right)%\]                              \[=(100-43.2)%\]                              \[=56.8%\]

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