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      Question

      Farhan and Dev can complete a work alone in 75 days and

      90 days respectively. If they work together and earn Rs. 8,250, find Dev’s share.
      A Rs.4,400 Correct Answer Incorrect Answer
      B Rs.5,460 Correct Answer Incorrect Answer
      C Rs.3,750 Correct Answer Incorrect Answer
      D Rs.1,460 Correct Answer Incorrect Answer

      Solution

      ATQ,

      When two people work together, their efficiency ratio is the reciprocal of the days taken.

      Ratio of efficiency of Farhan and Dev respectively = 90:75 = 6:5

      So, ratio of wages = 6:5

      Therefore, Dev’s wage = (5/11) × 8,250 = Rs. 3,750

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