Problem #83: Water and Milk
There are two glasses on the table, one containing water and the other one milk.
They both contain exactly the same amount by volume. If you take a teaspoon of
water and mix it into the milk and then take a teaspoonful from the milk glass
and mix it with the water, both glasses become contaminated. But which is the
more contaminated? Does the water now contain more milk than the milk does
water or the other way round?