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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:

35.55 km/hr
36 km/hr
71.11 km/hr
71 km/hr

Correct Answer: 71.11 km/hr

Explanation:

Total time taken =	❨	160	+	160	❩hrs.	=	9	hrs.
		64		80			2

∴ Average speed =	❨	320 x	2	❩km/hr	= 71.11 km/hr.
			9

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