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If you have a calculator, multiply the bill amount by 0.15

If not:

Take the amount of the bill.

Move the decimal place one place to the left - that is 10%

Halve that number - that is 5%

Add the two together - and you've got 15%

Simplicity!

So, bill of 37.56

Step 1: 3.76

Step 2: 1.88

Step 3: 5.64

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12y ago
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Q: How do you estimate a 15 percent tip?
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