Question

Abdul while driving to school computes the average speed for his trip to be 20km/h on his return trip along the same route , there is less traffic and average speed is 40km/h . what is the average speed for Abdul trip​

Answer 1

Answer:

20km+40km/1hour+1hour

=60km/2hours

=30km/h

Answer 2

Explanation:

Average speed=Total distance travelled/Total time taken

Here,Distance to go=speed×time=20×1=20km

Distance to come=speed×time=40×1=40km

therefore,

Average speed=20km+40km/1hr+1hr=60km/2hr=30km/hr