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      Question

      If the length of a rectangle is increased by 10%

      and the area is unchanged , then its corresponding breadth must be decreased by?
      A 100 % Correct Answer Incorrect Answer
      B 110 % Correct Answer Incorrect Answer
      C 190/11 % Correct Answer Incorrect Answer
      D 100/11 % Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Length is increased by 10% = 1/10 So breadt will be decreases by = 1/(10 + 1) x 100 = 100/11 % Alternate Method; If Length increases by 10% . lets syaing increasing from 100 to 110 So breadth will decrease incersalt from 110 to 100 So % decrease in breadth = (110 - 100)/110 `xx` 100 = 10/110`xx` 100 = 100/11 % ` `

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