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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-14

  • question_answer
    A typist uses a paper 30 cm by 15 cm, He leaves a margin of 2.5 cm at the top and bottom and 1.25 cm on either side. What percentage of paper area is approximately available for typing?

    A)  65%                

    B)  70%

    C)  80%    

    D)  60%

    Correct Answer: A

    Solution :

    Area of original paper \[=30\times 15=450\,\,c{{m}^{2}}\] \[=2\left( 2.5\times 15 \right)+2(1.25\times 30)\] \[=2\times 37.5+2\times 37.5\] \[=75+75=150\,\,c{{m}^{2}}\] Area of paper available for typing \[=450-150=300\,\,c{{m}^{2}}\] \[\therefore \]Required percentage \[=\frac{300}{450}\times 100=66\frac{2}{3}%=65%\]


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