Question

Rakhi walks to his school which is at a distance of 3 km from his home in 30
minutes. On reaching he finds that the school is closed and comes back by a bicycle
with his friend and reaches home in 20 minutes. His average speed in km/h is:​

Answer 1

Answer:

7.2 km/h

Explanation:

rakhi home to school distance is 3 km time taken in 30 minutes = 30/60 hour =0.5 hour.

and in returning from school to home time taken = 20 min= 20/60 hour =0.33 hour

now, average speed = total distance/time taken

= 3+3/0.5+0.33 km/h

= 7.2 km/h