Question

Abdulwhile driving to school computes the average speed for his trip to be 20 kilometre per hour existing tab along the same road that is less traffic and the average speed of 30 kilometre per hour what is the average speed for Abduls trip ​

Answer 1

Answer:

average speed =2 V1 V2/(V1+V2)

=2×30×40/(30+40)=240/7