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      Question

      The simple interest on a sum is 7/13 of the principal

      for 21 years. What is the rate (in 13 percentage) of interest per annum? (Rounded to two decimal places)
      A 4.26 Correct Answer Incorrect Answer
      B 3.21 Correct Answer Incorrect Answer
      C 2.56 Correct Answer Incorrect Answer
      D 3.97 Correct Answer Incorrect Answer

      Solution

      The correct answer is C

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