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      Question

      An amount is first boosted by 28% and then cut down by 40%.

      Find the overall percentage change from the original amount.
      A 23.2% decrease Correct Answer Incorrect Answer
      B 10.1% decrease Correct Answer Incorrect Answer
      C 21.5% increase Correct Answer Incorrect Answer
      D 12.5% increase Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the amount be 100b

      Final amount = 1.28 × 0.60 × 100b = 76.8b

      Overall percentage change = [(76.8b - 100b) ÷ 100b] × 100 = -23.2% or

      23.2% decrease

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