A person can row a boat 5 km an hour in still water. It takes him thrice as long to row upstream as to row downstream. Find the rate at which the stream is flowing. Regards Share with your friends Share 0 Ankita Agarwal answered this Dear Student, Speed of rowing by a person =5 km/hr.Let Speed of stream =x km/hr Upstream Speed =(5−x) km/hr Downstream speed =(5+x) km/hr According to the question, ⇒35−x=5+x ⇒5+x=15−3x ⇒4x=10 ⇒x=2.5 km/hrhence speed of stream =2.5 km/hr Regards 1 View Full Answer