1.

A man covers a certain distances by car, driving at a speed of 70 km/hr and he returns back to the starting point riding on a scooter at 55 km/hr. Find his average speed for the whole journey.

A.  61.0 km     
B.  61.6 km
C.  67.4 km     
D.  69.7 km
Answer» C.  67.4 km     


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