What does "per" indicate in mathematical terms, such as in rates?

In mathematical terms, "per" typically indicates a division of quantities. When we see phrases like "miles per hour" or "cost per item," it means we are comparing two different units by dividing one by the other. For instance, saying "60 miles per hour" implies that 60 miles is the distance traveled in one hour. This division gives us a rate that helps us understand the relationship between the two quantities involved.

The concept of division is essential here, as it allows us to quantify how one quantity relates to another. Therefore, when "per" is used, it sets the framework for understanding rates which often require this division to convey meaningful information.