Two cities A and B are 360 km apart. A car goes from A to B with a speed of 40 km/hr and returns to A with a speed of 60 km/hr. What is the average speed of the car?
Average Speed = Total Distance / Total Time
Total Distance = 360 + 360 = 720 km
Total Time = 360/40 + 360/60 = 9 + 6 = 15 hr
Average Speed = 720/15 = 48 km/hr
The correct option is A.