Hi, everyone, I am a new immigrant. New to the US as well as its custom. Last night, I had dinner with my friend in a local restaurant. The dinner costed like about 40 bucks, and I paid with credit card, so on the bill, I have to fill out how much tips I want to pay and the total amount, so I wrote down 50 on the total and left the tips blank assuming the waiter would calculate the tips I wanted to pay (eg. 50-40 = 10 bucks) and wrote it down himself, but today when I lookep up my account online, I saw that only 40 bucks are charged from my amount! So what's wrong? Am I suppose to pay tips in cash or do they just mistakenly forgive to charge tips, or should I fill out the amount of tips paid instead of leaving it blank? Thx to anyone who can answer this simple question!!
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