A person travels from A to B at a speed of 40 km/hr and returns by increasing his speed by 50%. What is his average speed for both the trips?
60 km/hr
52 km/hr
56 km/hr
48 km/hr
Explanation:
Speed from A to B =40 km/hr
Speed from B to A =40+20=60 km/hr
Average Speed =2×40×6040+60=48 km/hr
Speed from A to B =40 km/hr
Speed from B to A =40+20=60 km/hr
Average Speed =2×40×6040+60=48 km/hr