1.

A car covers a certain distance going at a speed of 60 km/h. and returns to the starting point at a speed of 40 km/h. The average speed for the whole journey is :

A. 48 km/h
B. 50 km/h
C. 45 km/h
D. 40 km/h
Answer» B. 50 km/h


Discussion

No Comment Found