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      Question

      A sum of money grows to Rs. 4,900 in 4 years and Rs.

      5,600 in 6 years under simple interest. What is the original principal amount?
      A 2680 Correct Answer Incorrect Answer
      B 3500 Correct Answer Incorrect Answer
      C 1650 Correct Answer Incorrect Answer
      D 2080 Correct Answer Incorrect Answer

      Solution

      ATQ,
      Difference in interest over 2 years: 5,600 βˆ’ 4,900 = 700
      Annual interest: 700 / 2 = 350
      Principal = 4,900 βˆ’ (4 Γ— 350) = 3,500

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