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      Question

      Quantity I. A sum of money becomes tripple in 4 years at

      compound interest, compounded annually. In how many years it will become 9 times? Quantity II. What must be the rate of interest if a given amount tripled itself in 20 years? Study the following information carefully and answer the Questions given below:
      A Quantity I < Quantity II Correct Answer Incorrect Answer
      B Quantity I > Quantity II Correct Answer Incorrect Answer
      C Quantity I ≤ Quantity II Correct Answer Incorrect Answer
      D Quantity I ≥ Quantity II Correct Answer Incorrect Answer
      E Quantity I = Quantity II or no relation can be estblished Correct Answer Incorrect Answer

      Solution

      Quantity II. Since the amount was Rs 100. It becomes Rs 300 in 20 years. Rs 300 – Rs 100 = Rs 200 interest In 20 years, interest is Rs 200 In 1 year, the interest is Rs 200/20 Rate of interest = 10% per annum Hence Quantity I < Quantity II

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