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Physics Chemistry

Entry Test MCQ :: Time and Work Problems


  Three pipes A B and C can fill a tank in 20 hours. After working at it together for 5 hours C is closed and A and B fill it in 30 hrs. C alone can fill it in
[A]. 35 hrs[B]. 40 hrs
[C]. 30 hrs[D]. 28 hrs

Answer: Option B


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