Question
A boat goes 200 km with the current in 10 hours, and
returns the same distance against the current in 20 hours. Find the speed of the boat in still water.Solution
ATQ,
Speed of boat in downstream = 200 / 10 = 20 km/h Speed of boat in upstream = 200 / 20 = 10 km/h Speed of boat in still water = (20 + 10) / 2 = 30 / 2 = 15 km/h
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