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      Question

      The simple interest on a sum of Rs. (6x + 100) for 4

      years at 10% per annum is Rs. 1,200. Find the value of x.
      A 525 Correct Answer Incorrect Answer
      B 530 Correct Answer Incorrect Answer
      C 435 Correct Answer Incorrect Answer
      D 440 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let the principal be Rs. (6x + 100). Simple interest = P × R × T / 100 = (6x + 100) × 10 × 4 / 100 = 1,200 (6x + 100) × 0.4 = 1,200 6x + 100 = 3,000 6x = 2,900 x = 1450/3

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