Question
If the length of a rectangle is increased by 40% and its
breadth is decreased by 25%, then the area of the rectangle will be increased or decreased by how much percent?Solution
According to the question Percentage change in Area = x – y – xy/100 = 40 – 25 – 40 × 25/100 = 15 – 10 = 5% The area of the rectangle will be increased by 5%.
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