SOLUTION: the speed of a boat in still water is 9 km/hr.if the boat goes 54 km downstream in 4hrs,find the speed of the stream?
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Question 771244: the speed of a boat in still water is 9 km/hr.if the boat goes 54 km downstream in 4hrs,find the speed of the stream?
Answer by oscargut(2103) (Show Source): You can put this solution on YOUR website!
total sspeed = 54/4 = 13.5
speed of the current = 13.5 - 9 = 4.5
Answer: 4.5 km/hr
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