Question

A car takes 20 minutes to cover a distance of 15 km. Calculate its speed in km/h and m/s.
What is that answer

Answer 1

15km = 15000m. 20min=20×60=1200sec
speed =distance /time
=15000/1200
=150/12=50/4=25/2=22.5m/s
In km /h
22.5×18/5=4.5×18=81km/h