These burgers start with the $1 version which has bacon, cheese, and a beef patty. The $2 gets another beef patty. The $3 one gets another slice of cheese and a beef patty added to the $2 one.
For $3, then, you get 3 patties, 2 slices of cheese, and bacon in a bun.
If I could eat this stuff, I’d buy three $1 stackers and put the innards on one of the buns. Then I’d have three patties, three cheese slices, and three layers of bacon in a bun. My dog would enjoy the other two buns.
This bit of meat math is based on the burgers as shown on the B.K. commercial.