Question
The speed of a boat in still water is 15 km/hr. It covers (upstream) a distance of 64 km in 5 hours. The speed (in km/hr) of the stream is
Solution
Upstream speed of boat = Distance/Time = 64/5 = 12.8 km/hr Therefore, speed of current = 15 – 12.8 = 2.2 km/hr
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