The meaning of the rate

The video tutorial describes a race where participants must cover 2 kilometers in 4 minutes to win. The Red Bicycle Rider wins by completing the distance just in time. The tutorial then explains the concept of rate, using the example of the boy with the red bike who covers 2 kilometers in 3 minutes. It illustrates how this rate can be used to calculate distances over different time periods, emphasizing the relationship between distance and time.

If the boy rides for 8 minutes, how many kilometers will he achieve?

What is the term used to describe the ratio between distance and time?