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?
(a) 45 km/hr (b) 48 km/hr (c) 50 km/hr (d) 55 km/hr
(b) Average speed of two cars at a speed V1 and V2
