Question
A boat takesĀ 3 hours Ā to travelĀ 54 km downstream
Ā andĀ 3 hours Ā to travelĀ 42 km upstream . What is theĀ speed of the boat in still water ?Solution
Downstream speed = distance / time = 54 / 3 = 18 km/h Upstream speed = 42 / 3 = 14 km/h Speed of boat in still water = (Downstream + Upstream) / 2 = (18 + 14) / 2 = 32 / 2 = 16 km/h
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