Question

a car completes a journet at an average speed of 40km/h. at what speed must it travel on return journey if average speed for complete journey is 60km/h

Answer 1

The answer is 80km/h I think.

Answer 2

The return speed would be 80km/h.

40km/h+80km/h=160km/h
160km/h(divide by)2=60km/h