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      Question

      'A', 'B' and 'C', alone can do some work in 20 days, 25

      days and 50 days, respectively. If they work together for wages of Rs. 11,000, then find the difference between shares of 'A' and 'B'.
      A Rs. 800 Correct Answer Incorrect Answer
      B Rs. 900 Correct Answer Incorrect Answer
      C Rs. 1100 Correct Answer Incorrect Answer
      D Rs. 1000 Correct Answer Incorrect Answer

      Solution

      Ratio of time taken by 'A', 'B' and 'C' = 4:5:10 So, ratio of efficiency of 'A', 'B' and 'C' = (1/4):(1/5):(1/10) = 5:4:2 = Ratio of shares of 'A', 'B' and 'C', out of total wages Required difference = 11000 X {(5 - 4)/11} = Rs. 1000

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