Question
A man goes downstream with a boat to some destination
and returns upstream to his original place in 6 hours. If the speed of the boat in still water and the stream is 10km/h and 4km/h respectively, the distance of the destination from the starting place is.Solution
Let the speed of boat in still water =B and speed of stream =S B=10km/h, S=4km/h B+S=14km/h B-S=6km/h Let Distance =D km D/14+D/6=6 10D=252 D=25.2km
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