Hey..!!

If A is open all the time and B and C are open for one hour each alternately, the tank will be full is

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Two pipes A and B can fill a tank in 24 hours and 1717 hou

Three taps A, B and C can fill a tank in 12, 15 and 20 hours

Three taps A, B and C can fill a tank in 12, 15 and 20 hours

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There are 12 pipes attached to atank.

Some of them are fill

Some of them are fill

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