Four friends are gathered at a pub. They have in front of them two 8-pint trankards full of beer, and an empty 3-pint mug.
Since they are still sober, they quickly calculate that they have 16 pints for the four of them, which comes out to an even 4 pints per person.
Can they divide the beer equally with the containers they have available?
(In reply to re: Full shortest solution
by Nick Reed)
all you have to do here is let each person drink exactly four pints. I will prove to you that this is easy enough - if you let me drink first...