A boat travels between two cities that are 18 miles apart. When going downstream, with the current, the trip takes 9/8 hour(s). Returning upstream, against the current, the boat covers the same distance in 9/5 hour(s). What is the current of the river? miles per hour What is the speed of the boat in still water?
+36916 rate * TIME = DISTANCE
DISTANCE/TIME =rate
18 / 9/8 = s + c s = boat speed c = current
18 / 9/5 = s - c add the two equations together to solve for 's' then you can compute 'c' (if ya want to)
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