Question

A train travels a distance of 20 km at uniform speed of 60 km/hr.it travels another distance of 40 km with a uniform speed of 80 km/hr.calculate the average speed of the train

Answer 1

Hii frnd
Here,
1st Time=20/60
              =1/3 hours
2nd time=40/80
              =1/2 hours
Total time=1/2+1/3=5/6 hours
Average speed=total distance/total time
                         =60*6/5
                         =72 km/hr
Hope it helped u.