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Question
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:
Options:
A .  35.55 km/hr
B .  36 km/hr
C .  71.11 km/hr
D .  71 km/hr
Answer: Option C
Answer: (c).71.11 km/hr

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