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 :

Foundation

Mathematics Foundation

Time Speed Distance

Question

35.55 km/hr

71 km/hr

71.11 km/hr

36 km/hr

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Average speed $\frac{320}{\frac{160}{64} + \frac{160}{84}}$ = 71.11km/hr.

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