Question
A boat goes 52 km in Downstream in 4 hours and takes 5
hours to complete a distance of 15 km in upstream. Find the speed of boat in still water.Solution
Speed of boat in still water = (D + U)/2 Downstream speed (D) = 52/4 = 13 km/hr Upstteam speed (U) = 15/5 = 3 km/hr Speed of boat in still water = (13 + 3)/2 = 16/2 = 8 km/hr
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