Pipes A and B can fill a tank in 8 and 24 hours respectively. Pipe C can empty it in 12 hours
Pipes A and B can fill a tank in 8 and 24 hours respectively. Pipe C can empty it in 12 hours. If the three …
Pipes A and B can fill a tank in 8 and 24 hours respectively. Pipe C can empty it in 12 hours. If the three …