Question 15
A cistern can be filled in 9 hours. But it takes 10 hours, due to a leak in its lower part. If the cistern is full, then how many hours does it take to empty the cistern?
Use constant inlet and leak rates. During emptying, close the inlet and let only the leak drain the full tank completely.
Use constant inlet and leak rates. During emptying, close the inlet and let only the leak drain the full tank completely.