Question 442916: The speed of a boat in still water is 10 km/h. The boat travels 12 km upstream and 28 km downstream in a total time of 4 hours. What is the speed of the stream? Answer by jorel1380(2518) (Show Source):
You can put this solution on YOUR website! 12/(10-x)+28/(10+x)=4
The speed of the stream is 4 kph..