Answer: 3 mi/min for airspeed
0.5 mi/min for windspeed
Explanation:
1 hr 40 mins=
1 hr + 40 mins=
60 mins + 40 mins=100 mins
300 mi/100 mins=3 mi/min for airspeed
100 mins+20 mins=120 mins
300 mi/120 mins=
30/12=
10/4=2.5 mi/min for airspeed and windspeed
|2.5-3|=
|-0.5|=0.5 mi/min for windspeed ==> windspeed is a positive value, not a negative value.