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Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?

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Pipes & Cisterns Admin 3 years 2 Answers 847 views 0

Answers ( 2 )

  2. Abhishek S
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    May 26, 2018 at 3:28 pm
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    Close to 10.5 minutes

  3. Deepak
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    April 18, 2018 at 11:05 am
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    ans = 14 min 40 sec

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