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      Question

      Rohit and Karan can complete a work alone in 64 days and

      80 days respectively. Working together they earn Rs. 7,200. How much does Karan get?
      A Rs.4,400 Correct Answer Incorrect Answer
      B Rs.5,460 Correct Answer Incorrect Answer
      C Rs.3,200 Correct Answer Incorrect Answer
      D Rs.1,460 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Ratio of efficiency = reciprocal of days.

      Ratio of efficiency of Rohit and Karan = 80:64 = 5:4

      So, ratio of wages = 5:4

      Karan’s wage = (4/9) × 7,200 = Rs. 3,200

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