A speed of boat in still water is 11 km/hr. It can go 12km upstream and return downstream to the original point in 2hrs 45 mins. Find the speed of the stream
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Speed of the boat in still water = 11 km/hr
Let the speed of stream = x km/hr
speed upstream = (11-x) km/hr
speed of downstream = (11+x) km/hr
According to the given condition
{12/(11+x)}+{12/(11-x)} = 11/4
Solve
Speed of the stream = 5 km/hr
Let the speed of stream = x km/hr
speed upstream = (11-x) km/hr
speed of downstream = (11+x) km/hr
According to the given condition
{12/(11+x)}+{12/(11-x)} = 11/4
Solve
Speed of the stream = 5 km/hr
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