Question 316998
D=RT
1190=R*5
R=1190/5
R=238 MPH WITH THE WIND.
1190=R*7
R=1190/7
R=170 MPH AGAINST THE WIND.
(238-170)/2=68/2=34 MPH IS THE SPEED OF THE WIND.
238-34=204 SPEED OF THE PLANE IN STILL AIR.
170+34=204 DITTO.