Question

A student walks a distance of 3km in 20minutes. calculate his average speed​

Answer 1

Answer:

9 Km/h

Step-by-step explanation:

Walking 3 Km for 20 minutes from the definition of speed, it's distance covered per unit time. Here, the distance covered is expressed per unit hour.

$Speed=\frac {distance}{time}$

Substituting 3.5 Km for distance and time for 20 minutes

To convert time into hours, we divide the minutes by 60 hence time=20/60=1/3 hours

$Speed=\frac {3 Km}{1/3 hours}=9 Km/h$

Therefore, the speed is 9 Km/h