Rohit covers one-fourth of the total distance at 20 km/hr, one-fourth at 10 km/h and rest of his journey at 80 km/h. Find Rohit’s average speed for the whole distance?
A.22.85 km/hr
B.25.15 km/hr
C.50 km/hr
D.40 km/hr
Answer: A
No answer description available for this question.