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A, B and C can do a piece of work in 7 days, 14 days and 28 days respectively. How long will they taken, if all the three work together

  • 3 days
  • ✅ 4 days
  • 5 days
  • 6 days

Answer is "4 days"

2 Answer and explanations

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Christina Christina

like it

Mia Mia

Thanks for the answer

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