Subject

    Quantitative Aptitude

    Topic

    Areas & Volumes

    A typist uses a sheet measuring 20cm by 30cm lengthwise.If a margin of 2 cm is left on each side and a 3 cm margin on top and bottom, then percent of the page used for typing is

    ক)
    64%
    খ)
    74%
    গ)
    84%
    ঘ)
    94%

    Explanation

    Area of the sheet = (20×30)cm2\left(20\times30\right)cm^2 Area used for typing = [(20−4)×(30−6)]cm2\left[\left(20-4\right)\times\left(30-6\right)\right]cm^2 required %  = 384600×100\frac{384}{600}\times100 =64%

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