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      Question

      A number increases by 20% and becomes X. If X is later

      decreased by 25%, the final value is 180. Find the original number.
      A 200 Correct Answer Incorrect Answer
      B 250 Correct Answer Incorrect Answer
      C 225 Correct Answer Incorrect Answer
      D 325 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let original be N. After 20% rise: 1.2N Then drop 25%: 0.75 Ă— 1.2N = 0.9N = 180 N = 180/0.9 = 200

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