A boat whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:
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Originally Answered: A boat whose speed is 15 km/hr in still water goes 30 km downstream and comes back in total of 4 hours 30 mins. What is the speed of the stream? Hence, speed of the boat going downstream is (15 + x) km/hr and the speed of the boat going upstream is (15-x) km/hr.
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