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      Question

      Rs. 2800 when invested at 8% p.a. for (x + 5) years

      gives a simple interest of Rs. 4480. Find the amount received when the same sum is invested at 5% p.a. simple interest for 1.5x years.
      A Rs.5950 Correct Answer Incorrect Answer
      B Rs.5320 Correct Answer Incorrect Answer
      C Rs.7520 Correct Answer Incorrect Answer
      D Rs.8320 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      According to the question,
      (2800 Γ— 8 Γ— (x + 5)) Γ· 100 = 4480
      Or, 224(x + 5) = 4480
      Or, x + 5 = 20
      Or, x = 15
      Therefore, 1.5x = 22.5 years
      Required amount received = {(2800 Γ— 5 Γ— 22.5) Γ· 100} + 2800Β  = (3150) + 2800 = Rs. 5950

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