SOLUTION: a boat took 1 hour 50 minutes to go 55 miles downstream and 3 hours 40 minutes to return. find the rate of the current.

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Question 1075663: a boat took 1 hour 50 minutes to go 55 miles downstream and 3 hours 40 minutes to return. find the rate of the current.

Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
r, speed if no current
c, speed of the current
system%28r%2Bc=55%2F%281%265%2F6%29%2Cr-c=55%2F%283%262%2F3%29%29

system%28r%2Bc=55%2F%2811%2F6%29%2Cr-c=55%2F%2811%2F3%29%29

system%28r%2Bc=30%2Cr-c=15%29

2c=15 by Elimination Method.
highlight%28c=7%261%2F2%29