Question
The speed of a boat in still water is 12 km/h and the
speed of the current is 3 km/h. A person travels 135 kilometers in a boat in the upstream direction and returns to the starting point in the downstream direction. Find the time taken to cover the entire journey. type-sscSolution
Let the speed of boat in still water =B and speed of stream =S B=12km/h, S= 3km/h Speed of the boat in upstream =B-S=9km/h Speed of the of the boat in Downstream =B+S =15km/h ATQ- Total time = (135/9 +135/15) =15+9=24hours.
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