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Q:

A and B can do a piece of work in 40 days and 30 days respectively. They worked together for 12 days after that B was replaced by C. the work finish in next 8 days. In how many days C can alone finish the work?

  • 1
    60 days
  • 2
    50 days
  • 3
    90 days
  • 4
    80 days
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Answer : 4. "80 days"

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