In tank R, pipe A was opened for 9 hours and then closed. Pipes B and C were opened together for 3 hours and then both pipes were closed. After a tota...
Question
In tank R, pipe A was opened for 9 hours and then closed. Pipes B and C were opened together for 3 hours and then both pipes were closed. After a total of 12 hours, approximately what volume of tank remained empty (in cubic meters), if both pipes A and C were opened together, the tank will always be empty?