Question
The speed of a boat in still water is 12 km/hr. It
covers (upstream) a distance of 30 km in 4 hours. The speed (in km/hr) of the stream isSolution
Upstream speed of boat = Distance/Time = 30/4 = 7.5 km/hr Therefore, speed of current = 12 – 7.5 = 4.5 km/hr
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