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Railways R.R.C. (Hazipur) Solved Paper Held on 27-10-2013

  • question_answer
    A student who secures 20% marks in a test fails by 30 marks. Another student who secures 32% marks gets 42 marks more than those required to pass. Pass percentage of marks is?

    A) 25%                             

    B) 28%

    C) 30%                             

    D) 33%

    Correct Answer: A

    Solution :

    \[3220=12%=42-\left( -\text{ }30 \right)\] = 72 marks  \[100%=\frac{72}{12}\times 100=600\] \[20%\,\,of\,\,600=120\,\,marks\] (but fails by 30 marks Then pass marks = 120 + 30 = 150 marks. Pass percentage  \[=\frac{150}{600}\times 100=25%\]


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