Question

a cyclist traveld 100m in 20sec what is his average speed

Answer 1

speed = distance/time

= 100/20= 5m/s

therefore the average speed is also 5m/s.

Answer 2

Average speed
$= \frac{total \: distance \: }{total \: time}$
$= \frac{100}{20} = 5$
=5m/s