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      Question

      A sum of money at a specific

      annual simple interest rate grows to Rs. 2900 in 3 years and Rs. 3500 in 5 years. Calculate the interest earned when this same amount is invested at a rate of 25% p.a. compounded annually for 2 years.
      A Rs.1025 Correct Answer Incorrect Answer
      B Rs.1225 Correct Answer Incorrect Answer
      C Rs.1125 Correct Answer Incorrect Answer
      D Rs.1025 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Simple interest earned in two years = 3500 – 2900 = Rs. 600 Simple interest earned in 1 year = Rs. 300 So, sum invested = 2900 – 3 Γ— 300 = 2900 – 900 = Rs. 2000 Desired interest = [(1.25)2 – 1] Γ— 2000 = 0.5625 Γ— 2000 = Rs.1125

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