Question
A Man Rows upstream 48 km and downstream 72 kilometers
taking 6 hours each time the speed of the current is.Solution
Let the speed of boat in still water =B and speed of stream =S Speed in downstream (B+S) =72/6=12km/h Speed in upstream =B-S =48/6=8km/h B+S=12          … (1) B-S=8 … (2) After solving Eq (1) and (2) B =10km/h S=2km/h Speed of stream =2km/h
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