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      Question

      If the ratio of the sum invested and simple interest

      received after 1 year is 20:9 respectively, then find the rate of interest.
      A 45% Correct Answer Incorrect Answer
      B 28% Correct Answer Incorrect Answer
      C 35% Correct Answer Incorrect Answer
      D 65% Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let the sum invested and simple interest received be Rs.20x and Rs.9x respectively. Let the rate of investment be r% p.a. Therefore, {(20x x 1 x r)/100} = 9x => r = 45%

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