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A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours B atone for doing in:

Question: A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours B atone for doing in:
  • A. A. 8 hours
  • B. B. 10 hours
  • C. C. 12 hours
  • D. D. None of these
Correct Answer: C. C. 12 hours

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