BTW, if you do a comparative study you will discover the ratio of prices between various items haven't changed - just the inflation charged by the government critters at all levels.
Burger fries and a Cole was less than 50 cents.
I grew up in California close enough to go to McDonald’s at lunch. Hamberger 12 cents fries 10 cents and a coke for a dime or malt for 15. 1950’s.