Question 667156
D=RT
6=R*1
R=6 MPH WITH THE CURRENT.

6=R*3
3R=6
R=6/3
R=2 MPH AGAINST THE CURRENT.
(6+2)/2= SPEED OF THE BOAT IN STILL WATER
8/2=4 MPH.
THUS THE SPEED OF THE CURRENT IS:
6-4=2 MPH.
PROOF:
6-2=4
2+2=4