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      Question

      A sum of Rs 12,000 becomes Rs 15,600 in 3 years at

      simple interest. Find the rate of interest per annum.
      A 20% Correct Answer Incorrect Answer
      B 10% Correct Answer Incorrect Answer
      C 18% Correct Answer Incorrect Answer
      D 22% Correct Answer Incorrect Answer

      Solution

      SI = A βˆ’ P = 15,600 βˆ’ 12,000 = 3,600 SI = (P Γ— R Γ— T)/100 3,600 = (12,000 Γ— R Γ— 3)/100 3,600 = 360R R = 3,600 / 360 = 10 Answer: Rate = 10% per annum.

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