Question

A pipe p can drain out water from tank in 20 hours another pipe q can drain 20 litres per hour if both drain are opened the tank is emptied in 12 hours what is the capacity of the tank

Answer 1

Answer:

All the three pipes working together can fill the tank in 15 minutes. ... Q: Pipe A is an inlet pipe that can fill an empty cistern in 69 hours. Pipe B can drain the filled cistern in 46hours.