But taxes vary throughout the areas. And adding more items together. and splitting the dinner bill among friends. and all sort of other things that can make th

But taxes vary throughout the areas. And adding more items together. and splitting the dinner bill among friends. and all sort of other things that can make the final total anything from 0 to 99. I don't think it is silly to make the assumption they are equally likely. But I also don't know where you'd acquire these sorts of statistics.