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      Question

      The length and width of a rectangle are 40 cm and 24 cm respectively. If the length is increased by 20% and the width is decreased by 10%, what will be the perimeter of the resulting rectangle?

      A 160.2 cm Correct Answer Incorrect Answer
      B 125.2 cm Correct Answer Incorrect Answer
      C 139.2 cm Correct Answer Incorrect Answer
      D 179.2 cm Correct Answer Incorrect Answer

      Solution

      ATQ,

      Length of the new rectangle = 1.20 Γ— 40 = 48 cm

      Breadth of the new rectangle = 0.90 Γ— 24 = 21.6 cm

      Required perimeter = 2 Γ— (48 + 21.6) = 139.2 cm

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