Two pipes A and B can fill a tank in 20 minutes and 30 minutes,
Two pipes A and B can fill a tank in 20 minutes and 30 minutes, respectively. A third pipe C can empty the tank in 40 minutes. If all three pipes are opened simultaneously, how long will it take to fill the tank? (Rounded off to 2 decimal places.) दो पाइप A औरB एक टंकी […]
Two pipes A and B can fill a tank in 20 minutes and 30 minutes, Read More »