Subject

    Quantitative Aptitude

    Topic

    Areas & Volumes

    In measuring the sides of a rectangle, one side is taken 5% in excess and the other 4% in deficit. Find the error percent in the area, calculate from the those measurements.

    ক)
    .7%
    খ)
    0.8%
    গ)
    0.9%
    ঘ)
    0.3%

    Explanation

    let x and y be the sides of the rectangle then correct area = 105100x×96100y\frac{105}{100}x\times\frac{96}{100}y Error% = 504500xy−xy=4500xy\frac{504}{500}xy-xy=\frac4{500}xy % 4500xy×1xy×100=45=0.8\frac4{500}xy\times\frac1{xy}\times100=\frac45=0.8

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