Arithmetic & Basics
Basic

Tip Amount

Gratuity as a percentage of the bill.

Formula

tip=p100×bill\text{tip} = \frac{p}{100} \times \text{bill}

Variables

pTip percent
billBill amount

Example

15% of $40 = $6

Did You Know?

A quick 15% tip: take 10% (move the decimal) and add half of that again.