SOLUTION: The boat takes 30 minutes to get 10 miles downstream and one hour to get back.find the speed of the boat and the current

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Question 1065619: The boat takes 30 minutes to get 10 miles downstream and one hour to get back.find the speed of the boat and the current
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
              SPEED       TIME      DISTANCE
DOWN          r+c         0.5        10
UP            r-c         1.0        10


%28RATE%29%2A%28TIME%29=DISTANCE

system%28%28r%2Bc%29%281%2F2%29=10%2Cr-c=d%29
Solve this for r and c.