SOLUTION: assen can travel miles downstream in his motorboat in the same time he travels 3 miles upstream. if the current of the river is 3 mph, what is the boats rate in still water? write

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Question 971783: assen can travel miles downstream in his motorboat in the same time he travels 3 miles upstream. if the current of the river is 3 mph, what is the boats rate in still water? write an equation that could be used to model this problem. let r represent the boats rate (in mph) in still water?
Answer by josgarithmetic(39616)   (Show Source): You can put this solution on YOUR website!
You missed a datum in the description. Not too bad an omission; I will generalize.

r, speed of boat for still water, UNKNOWN
c, speed of river current
d, distance going downstream
u, distance going upstream
t, time to travel either direction, UNKNOWN


___________________rate___________time__________distance
UPSTRM_____________r-c____________t_____________u
DOWNSTR____________r+c____________t_____________d













, which makes sense for the signs




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