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      Question

      A number is first increased by 55%, and then decreased

      by 35%. What is the net percentage change in the original number?
      A 5.5% increase Correct Answer Incorrect Answer
      B 2.50% decrease Correct Answer Incorrect Answer
      C 0.75% increase Correct Answer Incorrect Answer
      D 7.92% decrease Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the number be '100b'

      Final number = 1.55 Γ— 0.65 Γ— 100b = '100.75b'

      Required percentage increase = [(100.75b - 100b) Γ· 100b] Γ— 100 = 0.75%

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