Tipping
Total including tip
Combines the bill and the tip in one multiplication, which is the form to use once the rate is settled.
The Formula
total = bill x (1 + rate)
Combines the bill and the tip in one multiplication, which is the form to use once the rate is settled.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| bill | Amount the tip is calculated on | currency | The same base used for the tip itself. |
| total | Bill plus tip | currency | For 85.50 at eighteen per cent this is 100.89. |
What Each Symbol Means
billcurrency
Amount the tip is calculated on
The same base used for the tip itself.
totalcurrency
Bill plus tip
For 85.50 at eighteen per cent this is 100.89.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate a tip page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate A Tip, filed under Everyday Life. Every number the guide produces comes from substituting into this one line.