I saw the same stupid show and got sucked in to thinking I had the right answer. My answer was 88 being because the cans look like they are empty, so to fill the glasses on the left the cans were poured into them and then another 4 litres came from the barrels, making 88 litres. I know its a little odd but makes sense to me.
I was completely dumbfounded when the answer revealed is 319 and now more than ever i'd like to know why, just so i know whether they are scamming people or if there really is a logical reason to why the answer is that much.
I hope someone comes up with a solution soon...did you have any theories as to how the answer could be 319?