The length of a rectangle is increased by 20% and its breadth is decreased by 20%. What is the percentage change in its area?

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A 4% decrease
B 4% increase
C No change
D 2% decrease

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Answer: A. 4% decrease

Assume the original dimensions Original length = 100cm and original breath =100cm. Original area = 10000 Increase the length by 20% -> new length = 120cm. Decrease the breadth by 20% -> 80cm 120 x 80 =9600. 10000-9600=400. 400/10000 x 100= 4% decrease.

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The length of a rectangle is increased by 20% and its breadth is decreased by 20%. What is the percentage change in its area?

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