Going against the current a boat takes 6 hours to make a 120mile trip. when the boat travels with the current on the return trip, it takes 5 hours. what is the rate of the boat in still water?

Question

anonymous · Answer

so if speed of boat in still water is Sb and
speed of current is Sc

When the boat is against the current, its speed is Sb - Sc = 120 miles / 6
When its with the current, its speed is Sb + Sc = 120 miles / 5

So you have a pair of equations ....