Practicing Success
Practicing Success
CUET Preparation Today
A man can row a boat in still water at a speed of 4.5 km/hr. In a river flowing at the rate of 1.5 km /hr, he starts his journey from a point downstream and comes back to the same point. Then the average speed of the total journey is : |
4 km/hr 6 km/hr 2 km/hr 8 km/hr |
4 km/hr |
