Speed of flight of a starling of 19.5 meters per second and a martin 1.4 times bigger on how many meters will fly by a starling in what a martin 1) in 1 seconds 2) in 2 minutes

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At the movement up the river boat speed - (15.3 - 1.5) = 13.8 km/h. Down the river - (15.3 + 1.5) = 16.8 km/h. Answer's : 13.8 · 2 + 16.8 · 3 = 27.6 + 50.4 = 78 km
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