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      Question

      Person K invested Rs. 4500 at a

      compound interest rate of 20% per annum (compounded annually) for 2 years, while person P invested Rs. 5400 at a simple interest rate of 15% per annum for 3 years. How much more interest did P earn compared to K?
      A Rs.250 Correct Answer Incorrect Answer
      B Rs.650 Correct Answer Incorrect Answer
      C Rs.450 Correct Answer Incorrect Answer
      D Rs.500 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Interest received by 'K' = 4500(1 + 20/100)2 – 4500 = 6480 – 4500 = Rs. 1980 Interest received by 'P' = (5400 Γ— 3 Γ— 15) Γ· 100 = Rs. 2430 So, difference in interests received = 2430 – 1980 = Rs. 450Β 

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