Question 227922
55/5=11 MPH IS THE SPEED DOWNSTREAM.
55/11=5 MPH IS THE SPEED UPSTREAM.
(11-5)/2=16/2=8 MPH IS THE BOAT SPEED IN STILL WATER.
PROOF.
8+3=11 MPH. FOR THE CURRENT DOWN STREAM
8-3=5 MPH. DITTO.