Story has it that A&W lost out its market to macdonalds
A&W made a 1/3 pounder but people thought that the similarly priced 1/4 pounder from macdonalds was the better deal
[URL]https://awrestaurants.com/blog/aw-third-pound-burger-fractions[/URL]
So, imagine the moneys there is to be made selling a 1/5 pound burger for the same price as a 1/4 pounder, we'd double our profit! ;)