A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is:

A man on tour travels first 160 km at 64 km/hr and the next 160 km at

1.	A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is:
A.	35.55 km/hr
B.	36 km/hr
C.	71.11 km/hr
D.	71 km/hr
Answer» D. 71 km/hr

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