Question

A person goes to market with speed 20 km/hr find market closed and return to home
with speed 30 km/hr. Average speed for complete journey is

Answer 1

When distance travelled by the body is same,then the average speed is:-

(2v1v2)/(v1+v2)

v1=20km/h

v2=30km/h

(2×20×30)/(20+30)

1200/50

24

Thus,the average speed for the whole journey is 24km/h