Question
A boat travels 140 km with the flow in 7 hours. For the
upstream journey over the same distance, the time taken is 7 hours more. Determine the speed of the boat in still water.Solution
ATQ,
Downstream speed = 140 / 7 = 20
Upstream speed = 140 / 14 = 10
V + U = 20
V – U = 10
By solving, we get V = (20 + 10) / 2 = 15 km/hr
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