Number Systemsmedium
0:00.0
A tank can be filled by Pipe A in hours and by Pipe B in hours. If a drain at the bottom empties the full tank in hours, how long does it take to fill the tank if all three are open?
A tank can be filled by Pipe A in hours and by Pipe B in hours. If a drain at the bottom empties the full tank in hours, how long does it take to fill the tank if all three are open?