# Math Help - average speed

1. ## average speed

What would be the average speed if someone ran 200 meters in 21.56seconds?

2. Originally Posted by Princess95
What would be the average speed if someone ran 200 meters in 21.56seconds?
Average speed is $\frac {\mbox {Total Distance}}{\mbox{Total Time}}$

and remember your units, here it would be m/s