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Question
The length of rectangle is increased by 20% and the width is decreased by 20% . What is the percentage increase or decrease of the area of the rectangle .
decreased by 20%
increased by 4%
decreased by 2%
remains same
None of these
ANSWER : 5
Descrption
<p>We can let L = the original length</p> <p>and W = the original width </p> <p>Thus, the original area of the rectangular is LW and the new area is 1.2L× 0.8W = 0.96LW</p> <p>So, the area is decreased by 4% </p>
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