Question

You need to empty 1 mug of milk and 1 mug of water into the barrel such that
* We can differentiate between water and the milk.
* We can sperate milk from the water.
* We cant use any kind of divider to separate water and milk.

Answer 1

• Pour the water in, freeze it, then add the milk.
  or
• Cut the barrel in half, and pour the milk into one half, and the water into the other.