A car travels 40 km at an average speed of 80 km/h and then travels 40 km at an average speed of 40 km/h. The average speed of the car for this 80 km trip is
A40 km/h
B45 km/h
C48 km/h
D53 km/h
Can someone explain meBut I think it is '40 km/hr'
Can someone explain meBut I think it is '40 km/hr'