I'm a waiter and this is what someone gave me as a tip

It goes by how much their bill was...if there bill was 100-120 yes 20 bucks is a good tip

Guess it depends on where you are, 20% is the usual average in the US now, so that would be considered an ok tip (pretending its actually a 20 and not a 10)

considering there are a lot of people out there who don't tip at all, $10 is a hefty tip no matter the bill.