SOLUTION: Alvin paddled for 5 hours within a 4km/h current to reach a campsite. The return of the trip against the same current took 9 hours. Find the speed of the boat in the still water.
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Question 850188: Alvin paddled for 5 hours within a 4km/h current to reach a campsite. The return of the trip against the same current took 9 hours. Find the speed of the boat in the still water.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
5*(x+4)=9*(x-4)
x = 14 kph for the boat
5*18=9*(10)
90=90
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