A coach covers a distance in 5 hours at 66 km/h. At what speed must it travel to cover the same distance in 3 hours 40 minutes?
Correct answer B. 90 km/h
Explanation
Distance = 66 × 5 = 330 km. 3 hours 40 minutes = 11/3 hours, so speed = 330 × 3/11 = 90 km/h.
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