1.

 Manish travels at the speed of 40 km/hr for 3 hours and the speed of 60 km/hr for 4.5 hours. In this way he covers three fifths of the total distance. At what average speed should he travel to cover t

A. 62 kmph
B. 63 kmph
C. 64 kmph
D. 65 kmph
Answer» E.


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