Question 658503
D=RT
3120=X*6.5
6.5X=3120
X=480 MPH AGAINST THE WIND.
3120=X*6
6X=3120
X=3120/6
X=520 MPH WITH THE WIND.
(520-480)/2=900/2=450 MPH IS THE SPEED OF THE PLANE IN STILL AIR.