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Q:

A alone can complete a work in 25 days and B alone can do the same work in 20 days. A started the work and after working 7 days B joined A to finish the remaining work. In how many days, the total work will be finished?

  • 1
    8 days
  • 2
    15 days
  • 3
    9 days
  • 4
    12 days
  • 5
    None of these
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Answer : 2. "15 days"

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