Question
A man rows upstream 60 km and downstream 36 km taking
12 hours each. Find the speed of current.         ÂSolution
Distance upstream= 60 km, time taken to row upstream = 12  hrs. Speed upstream = 60/12  = 5 km/hr. Distance downstream= 36 km, Time taken to row downstream = 12  hrs. Speed downstream =  36 /12  = 3 km/hr. Speed of the current = (5 – 3) * ½ = 1 kmph
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