If a kayaker paddles upstream 4 mi/hr and travels the same distance downstream 6 mi/hr, what is the rowing speed in still water? What is the speed of the current?

Answer 1

5 mph in still water. current speed = 1 mph

take the average of 4 and 6: (4+6)/2 = 10/2 = 5 mph

5+1 = 6 = down stream speed

4-1 = 4 = up stream speed