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      Question

      The income of β€˜A’ increases by 20% every year. If

      his income 3 years hence from now will be Rs. 51840, then find his income a year before from now.
      A Rs. 20000 Correct Answer Incorrect Answer
      B Rs. 22000 Correct Answer Incorrect Answer
      C Rs. 22200 Correct Answer Incorrect Answer
      D Rs. 25000 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let the present income of β€˜A’ be Rs. x Therefore, x(1 + 20/100)3 = 51840 Or, x = 51840/(1.2)2 = 30000 Therefore, his income a year before from now = 30000/1.2 = Rs. 25000

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