How to calculate a ratio

Let's call them Quantity A and Quantity B.

This can be done in a few ways:

• As a fraction: $\frac{\text{Quantity A}}{\text{Quantity B}}$
• Using a colon: $\text{Quantity A} : \text{Quantity B}$
• Using the word "to": $\text{Quantity A to Quantity B}$

Example: If there are 5 apples and 10 oranges, the ratio of apples to oranges is:

or

This means for every 1 apple, there are 2 oranges.