The length of a rectangle is double while its breadth is halved. What is the percentage change in area?

• A. None of these
• B. 50
• C. No change
• D. 75

Answer: (C)

Let length = l and breadth = bThen, area = lb New length = 2lAnd new breadth = b/2 ? New area = ( 2l ) x (b/2) = lbSo, there is no change in area .