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      Question

      Ankita invested Rs. 1800 at an annual interest rate of

      (a + 5)%, and she earned a total interest of Rs. 1404 after three years. Now, if she decides to invest the same amount in another account at an annual interest rate of 'a%', but this time for a duration of 2 years, how much interest will she earn in this scenario?
      A 700 Correct Answer Incorrect Answer
      B 650 Correct Answer Incorrect Answer
      C 456 Correct Answer Incorrect Answer
      D 756 Correct Answer Incorrect Answer
      E 780 Correct Answer Incorrect Answer

      Solution

      ATQ, 1800 Γ— (a + 5)/100 Γ— 3 = 1404 Or, 18a = 468 – 90 Or, a = 21 Desired Interest = 1800 Γ— (21/100) Γ— 2 = Rs. 756

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