I’d say that varies more regionally than anything else. I live in a major northeastern city, and you could barely feed 1 person for $20, even at cheap chain restaurants. Drive 2 hours away and things get a lot more affordable, not only for food prices but also rent. In that respect, 20% actually scales with cost of living as well.
Waffle House: feed a family of 4 for $20 Tip: $4 “Fancy” Restaurant: microwaved appetizer $20 Tip: $5
A percentage scales within an establishment, but not really across them.
I’d say that varies more regionally than anything else. I live in a major northeastern city, and you could barely feed 1 person for $20, even at cheap chain restaurants. Drive 2 hours away and things get a lot more affordable, not only for food prices but also rent. In that respect, 20% actually scales with cost of living as well.