Question 184443
72/35=2.057 mi/m. with the wind.
57/44=1.295 mi/m. against the wind.
(2.057-1.295)/2=.762/2=.381 mi/m. is the speed of the wind
2.057-.381=1.676 mi/m. is the speed of the plane in still air.
1.295+.381=1.676 ditto.