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      Question

      A value is first raised by 15% and then reduced by 40%.

      What is the overall percentage change in the original value?
      A 21% Correct Answer Incorrect Answer
      B 45% Correct Answer Incorrect Answer
      C 31% Correct Answer Incorrect Answer
      D 19% Correct Answer Incorrect Answer

      Solution

      Let the original value be 100n Final value = 1.15 ├Ч 0.6 ├Ч 100n = 69n Therefore, percentage decrease = [(100n - 69n) ├╖ 100n] ├Ч 100 = 31%

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