Inlet minus outlet

Water flows into the tank through two pipes and out of the third pipe spontaneously. Pipe A would fill the tank in 3 hours, pipe B would fill in 4 hours, and pipe C would flow out in 12 hours. If all three pipes open simultaneously, how long will the tank be full?

Correct answer:

t =  2 h

Step-by-step explanation:

Q=31+41121=124+123121=124+31=126=21=0.5 t Q=1  t=Q1=0.51=2 h



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algebraUnits of physical quantitiesthemes, topicsGrade of the word problem

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