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Money - Calculating a 20% Tip
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Calculating a 20% Tip

Money

Take the cost of whatever you’re trying to find a tip for. Move the decimal one place over to the left (10%), and then double the number to get your 20% tip.

Trick Source: Image Only - I used someone else's photo but the trick is my own
http://newyork.seriouseats.com/2009/02/restaurants-adding-sneaky-service-charges-to-bills.html

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