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Q:

A and  B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in-

  • 1
    10 days
  • 2
    8 days
  • 3
    12 days
  • 4
    15 days
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Answer : 3. "12 days"

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