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    Question

    In measuring the sides of a rectangle, there is an

    excess of 20% on one side and 15% deficit on the other. Then the error percent in the area is
    A 2% Correct Answer Incorrect Answer
    B 3.5% Correct Answer Incorrect Answer
    C 5.6% Correct Answer Incorrect Answer
    D 0.8% Correct Answer Incorrect Answer

    Solution

    Using the formula, Required percentage = [a + b + (ab/100)]% Negative sign for decrease = [20 - 15 - {(20 x 15)/100}] % = 2%

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