Question

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

Answer 1

Time taken=20x60=1200s
Dist.=15x1000=15000m
Speed=15000/1200=150/12=12.5 m/s
Speed= 12.5 m/s=12.5x18/5 km/h
          =2.5x18 Km/h
          =45 Km/h

Answer 2

Time taken=20x60=1200s

Dist.=15x1000=15000m

Speed=15000/1200=150/12=12.5 m/s

Speed= 12.5 m/s=12.5x18/5 km/h

         =2.5x18 Km/h

         =45 Km/h

Its Correct Answer

Trust me!