A Swimmer Walks 30km along the flow of the river in 3 hours 45 minutes and walks 15km against the flow in 2 hours 30min. Find the speed of the boat in Still Water and the Speed of flow
Let the speed of boat in still water =B and speed of stream =S then – ATQ- 
B-S =6 … (2) Solving (1) +(2) 2B =14 B=7km/h and S=1km/h
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