Aboat with speed of 1.20 km/h relative to the water is heading for a dock 2.29km downstream. if the river speed is 0.384 km/h, how many minutes will it take to reach the dock?

87min

Explanation:

v_boat = v_boat/water + v_water

v_boat = 1,2 + 0,384 = 1,584

s = vt

t = s/v = 2,29/1,584 * 60 min = 87min

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