SOLUTION: The question is the rate that a boat travels in still water is r and the current speed is c miles per hour. It takes 1.5 hours to travel 4 miles downsteam. Do I add or subtract c a

Question 449602: The question is the rate that a boat travels in still water is r and the current speed is c miles per hour. It takes 1.5 hours to travel 4 miles downsteam. Do I add or subtract c and r
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The question is the rate that a boat travels in still water is r and the current speed is c miles per hour.
It takes 1.5 hours to travel 4 miles downstream." Do I add or subtract c and r
Downstream, you add r and c: (r+c)
Upstream, you subtract c from r; (r-c)
:
The equation for,"It takes 1.5 hours to travel 4 miles downstream."
1.5(r + c) = 4
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