Algebra
posted by Ruth .
A tugboat goes 160 miles up stream in 20 hours, return trip downstream takes 5 hours. Find speed of tugboat without the current and the speed of the current

distance = rate x time
In this case we have:
distance = (rate + current) x time
and
distance = (rate  current) x time
160 = 20(rc)
160 = 5(r + c)
160 = 20r  20c
160 = 5r + 5c
Can you solve from here?
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