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Q: A and B together can do piece of work in 10 days. If A alone can do the same work in 15 days and C alone can do the same work in 20 days, then in how many days can B and C together do the same work?
  • A. 12
  • B. 11
  • C.
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  • D.
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Correct Answer: Option A -
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Explanations:

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