SOLUTION: It takes 2 hours to travel 16 miles downstream. It takes 8 hours to travel 16 miles upstream. find the rate of current.

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Question 387125: It takes 2 hours to travel 16 miles downstream. It takes 8 hours to travel 16 miles upstream. find the rate of current.
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
16=2(r+c)
16=8(r-c)


16=2r+2c
16=8r-8c


64=8r+8c
16=8r-8c

80=16r

r=5
16=2r+2c
16=2*5+2c
16=10+2c
6=2c
c=3

Answer: 3 mph