If the speed of a swimmer in still water is 9 km/h. Find the downstream speed of the swimmer, when the river is flowing with the speed of 6 km/h.
Correct Answer: Description for Correct answer:
Given.
Swimmer's speed in still water = x = 9 km/h
Rate of stream = y = 6 km/h
Therefore, Speed downstream = x + y
= 9 + 6 = 15 km/h
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