pyq/2015/csat/71
Two cities, A and B, are 360 km apart. A car goes from A to B at a speed of 40 km/hr and returns to A at 60 km/hr. What is the car's average speed?
(A) 45 km/hr
(B) 48 km/hr
(C) 50 km/hr
(D) 55 km/hr
Two cities, A and B, are 360 km apart. A car goes from A to B at a speed of 40 km/hr and returns to A at 60 km/hr. What is the car's average speed?
(A) 45 km/hr
(B) 48 km/hr
(C) 50 km/hr
(D) 55 km/hr