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      Question

      Investing Rs. (4z + 400) at 20% p.a. compound interest

      for 3 years yields an interest of Rs. (5z - 800). Find the value of ‘z’.(Can calculate approximate value )
      A 250 Correct Answer Incorrect Answer
      B 523 Correct Answer Incorrect Answer
      C 365 Correct Answer Incorrect Answer
      D 120 Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      or  Z = 523

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