A car covers half a distance between two points with a speed of 40 km/hr and next half with a speed of 60 km/hr. The average speed will be :
A. 40 km/hr
B. 48 km/hr
C. 50 km/hr
D. 60 km/hr.
Answer:B
A car covers half a distance between two points with a speed of 40 km/hr and next half with a speed of 60 km/hr. The average speed will be :
A. 40 km/hr B. 48 km/hr C. 50 km/hr D. 60 km/hr.