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Pipe A can fill a tank in 12 minutes,pip...

Pipe A can fill a tank in 12 minutes,pipe B in 18 minutes and pipe C can empty the full tank in 36 minutes. If all of them are opend simultaneously, find the time taken to fill the empty tank.

Text Solution

Verified by Experts

The work done by the 3 pipes together in 1 minute `=1//12+1//18-4//36=4//36=1//9`.
So, the empty tank will be filled in 9 minutes.
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