SOLUTION: A water tank has an inlet pipe and a drain pipe. A full tank can be emptied in 30 minutes if the drain is opened and an empty tank can be filled in 45 minutes with the inlet pipe o
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-> SOLUTION: A water tank has an inlet pipe and a drain pipe. A full tank can be emptied in 30 minutes if the drain is opened and an empty tank can be filled in 45 minutes with the inlet pipe o
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Question 329008: A water tank has an inlet pipe and a drain pipe. A full tank can be emptied in 30 minutes if the drain is opened and an empty tank can be filled in 45 minutes with the inlet pipe opened. If both pipes are accidentally opened when the tank is full, then how long will it take to empty the tank? Answer by scott8148(6628) (Show Source):
You can put this solution on YOUR website! it takes 30 min to drain the volume of the tank
___ during that time , 2/3 of the volume is replaced by the fill pipe
so the net result is that 1/3 of the tank is drained in 30 min
this means that it takes 90 min for the tank to empty , with both pipes open
