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      Question

      A sum of money earns ₹1,440 as simple interest in 4

      years at 9% per annum. What is the principal (sum invested)?
      A 5200 Correct Answer Incorrect Answer
      B 4000 Correct Answer Incorrect Answer
      C 6000 Correct Answer Incorrect Answer
      D 2500 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      SI = (P × R × T) / 100 1440 = (P × 9 × 4) / 100 1440 = 36P / 100 P = 1440 × 100 / 36 = 4000

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