When it comes to tipping in the U.S., the bill changes with just about every region or even by state. New Yorkers are generous with 20%, while a couple down South might balk at paying anything more than 15% for average service.
But what about the rest of the world? Whether you're traveling on business or taking a vacation, figuring out how much to tip (especially if you don't know the native tongue) can be frustrating.
Here's a guide to help you out:
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