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      Question

      The price of an item is first decreased by 30% and then

      increased by 20%. Find the net percentage change in the price.
      A 10% decrease Correct Answer Incorrect Answer
      B 18% increase Correct Answer Incorrect Answer
      C 16% decrease Correct Answer Incorrect Answer
      D 28% increase Correct Answer Incorrect Answer
      E 11% increase Correct Answer Incorrect Answer

      Solution

      Let the price be 100n Final price = 0.70 × 1.20 × 100n = 84n Required percentage = [(84n − 100n) ÷ 100n] × 100 = 16% decrease

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