A man covers the journey from a station A to station B at a uniform speed of 36 km/hr andreturns to A with a uniform speed of 45 km/hr. His average speed for the whole journey is :

A man covers the journey from a station A to station B at a uniform sp

1.	A man covers the journey from a station A to station B at a uniform speed of 36 km/hr and returns to A with a uniform speed of 45 km/hr. His average speed for the whole journey is :
A.	40 km/hr
B.	40.5 km/hr
C.	41 km/hr
D.	42 km/hr
Answer» B. 40.5 km/hr

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A man covers the journey from a station A to station B at a uniform speed of 36 km/hr andreturns to A with a uniform speed of 45 km/hr. His average speed for the whole journey is :

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A man covers the journey from a station A to station B at a uniform speed of 36 km/hr and
returns to A with a uniform speed of 45 km/hr. His average speed for the whole journey is :