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      Question

      If the length of a rectangle becomes double and its

      breadth becomes three-fourth, then find the percentage increase in its area.
      A 45% Correct Answer Incorrect Answer
      B 50% Correct Answer Incorrect Answer
      C 35% Correct Answer Incorrect Answer
      D 75% Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ, Let length and breadth of the rectangle be тАШLтАЩ cm and тАШBтАЩ cm Initial area = (L ├Ч B) cm┬▓ Increased length and breadth = тАШ2LтАЩ cm and тАШ3B/4тАЩ cm Increased area = {2L ├Ч (3B/4)} = {(3 ├Ч L ├Ч B)/2} cm┬▓ Required percentage = {(1.5LB тАУ LB)/LB} ├Ч 100 = 50%

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