Subject Category > Economics

Q. If the length of a rectangle is reduced by 20%, then by what percent should its width be increased so that the area does not increase?

A) 15%

B) 25%

C) 35%

D) 38%

25%

Additional Information > Exam point of View

Let the original dimensions be length = L and width = W. New length = 0.8L. To maintain the same area, (0.8L) × (new width) = L × W. New width = W / 0.8 = 1.25W. Hence, the width must be increased by 25%.

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