# How are rates calculated?

##### 1 Answer

Rates are calculating by dividing mathematically two quantities.

#### Explanation:

Mathematically speaking, any rate will respect the formula:

In a more advanced notation, using calculus:

So, to calculate a rate, you must have two values changing, you fix a time, or any equivalent measure, and calculate their changes, then divide them. Your rate will tell you how the numerator variable changes with the denominator variable.

Examples are: *velocity* - how space changes with time; *acceleration* - how the velocity changes with time. See that most rates, not necessary mandatory, will be something with respect time.

**Some rates**

See for more: Rate (mathematics)