Multiple Choice Questions on If the length of a rectangular field is increased by 20 and the breadth is reduced by 20 the area of........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

If the length of a rectangular field is increased by 20 and the breadth is reduced by 20 the area of...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    If the length of a rectangular field is increased by 20% and the breadth is reduced by 20%, the area of the rectangle will be 192m². What is the area of original rectangle?

    100m²

    Incorrect Answer

    150m²

    Incorrect Answer

    175m²

    Incorrect Answer

    200m²

    Correct Answer
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    Explanation:

    Length of rectangle = l m
    breadth of rectangle = b m
    l * (120/100) * b * (80/100) = 192
    1.2l * 0.8b = 192
    lb = 192 / 1.2 * 0.8 = 200 m²

    By: Amit Kumar
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