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      Question

      A certain sum of money becomes 6000 in 6 years and Rs.

      6240 in 10 years at any certain rate of simple interest. Find the principal amount.
      A Rs. 5040 Correct Answer Incorrect Answer
      B Rs. 5600 Correct Answer Incorrect Answer
      C Rs. 5640 Correct Answer Incorrect Answer
      D Rs. 5630 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Simple interest for 4 years = 6240 โ€“ 6000 = Rs. 240 Simple interest for 1 year = 240/4 = Rs. 60 Simple interest for 6 years = 60 ร— 6 = Rs. 360 So, required principal amount = 6000 โ€“ 360 = Rs. 5640

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