1.

 A man travels from point A to point B at the speed of 24 ms-1 and returns back at the speed of 16 ms- 1 . What is the average speed of the man in the whole ?

A. 6 ms-1
B. 10.7 ms-1
C. 12 ms-1
D. 19.2 ms-1
Answer» E.


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