There are 81 liters of pure milk in a container. One-third of the milk is removed and replaced by water. Then, one-third of the resulting mixture is a...
Question
There are 81 liters of pure milk in a container. One-third of the milk is removed and replaced by water. Then, one-third of the resulting mixture is again taken out and replaced by an equal amount of water. What is the ratio of milk to water in the new mixture?