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Q: P and Q can reap a field in 9 days, Q and R can reap it in 12 days and P and R in 18 days. Find how many days will they take to reap the field if all three work together?
  • A. 39 days
  • B. 4 days
  • C. 8 days
  • D. 19.5 days
Correct Answer: Option C -
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Explanations:

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