What is the speed of the speedboat?, 4 km/h, 20 km/h, 40 km/h, 10 km/h, What is the speed of the traditional junk?, 10 km/h, 40 km/h, 20 km/h, 30 km/h, What typical distance does the small fishing boat travel?, 7 kilometres, 12 kilometres, 10 kilometres, 15 kilometres

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