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NTSE Sample Paper NTSE SAT Practice Test-11

  • question_answer
    A typist uses a sheet measuring 20 cm by 30 cm lengthwise. If a margin of 2 cm is left on each side and a 3 cm margin on top and bot tom, then what percent of the page is used?

    A) 4:3                               

    B) 4:9

    C) 12:25       

    D) none of these

    Correct Answer: C

    Solution :

    [c] Area of the sheet \[=\text{ }\left( 20\times 30 \right)\text{ }c{{m}^{2}}\] \[=\text{ }600c{{m}^{2}}\] Area used for typing \[=\left( 20-4 \right)\left( 30-6 \right)\text{ }c{{m}^{2}}\] \[=384\text{ }c{{m}^{2}}\] \[\therefore \] Required percentage \[=\frac{384}{600}\times 100%\] =64%  


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