Hi,
I am a 160 lb. guy and I can eat at least 2, 1/4 lb. burgers. I would figure 20 lbs of burger. Make 40, 1/2 lb. burgers. I think when cooked at 1/2 lb. each, they would make 40 1/3 lb. burgers enough for 25 people to eat one each and a guy like me to have two.
So when, and where is this burger-fest? I'll bring the condiments!.....
George~