
John M. answered 02/16/18
Tutor
New to Wyzant
High School and College Science Tutor
Let r be the rowers' rate and c be the current's rate.
rate x time = distance
4(r + c) = 24
6(r - c) = 24
4r + 4c = 24
r + c = 6
c = 6 - r
6(r - (6 - r)) = 24
12r - 36 = 24
12r = 60
r = 5
c = 6 - 5 = 1
The rate of the current is 1 mile per hour.