Einstein goes from Ahmedabad To Lucknow at the speed of 40 km/hr and returned at the speed of 60 km/hr .the average speed of Einstein during the whole journey is

Einstein goes from Ahmedabad To Lucknow at the speed of 40 km/hr and r

1.	Einstein goes from Ahmedabad To Lucknow at the speed of 40 km/hr and returned at the speed of 60 km/hr .the average speed of Einstein during the whole journey is
A.	48 km/hr
B.	24 km/hr
C.	50 km/hr
D.	none of these
Answer» B. 24 km/hr

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Einstein goes from Ahmedabad To Lucknow at the speed of 40 km/hr and returned at the speed of 60 km/hr .the average speed of Einstein during the whole journey is

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