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      Question

      The interest received on investing Rs. (5p + 500) on

      simple interest at 10% p.a. for 4 years is Rs. (3p + 100). Find the ratio (p - 50) :(p + 50).
      A 2:3 Correct Answer Incorrect Answer
      B 1:3 Correct Answer Incorrect Answer
      C 3:4 Correct Answer Incorrect Answer
      D 4:5 Correct Answer Incorrect Answer
      E 5:6 Correct Answer Incorrect Answer

      Solution

      Simple interest = Principal X rate X time ÷ 100 So, 3p + 100 = (5p + 500) X 10 X 4 ÷ 100 Or, 3p + 100 = 2p + 200 Or, p = 100 Required ratio = (100 - 50) :(100 + 50) = 50:150 = 1:3

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