a boat covers a certain distance downstream in 4 hours but takes 6 hours to re

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a boat covers a certain distance downstream in 4 hours but takes 6 hours to return upstream to the starting point. if the speed of the stream be 3 km/hr, find the speed of the boat in still water

Options:

A . 15 km/hr

B . 12 km/hr

C . 13 km/hr

D . 14 km/hr

Answer: Option A
Explanation :

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