Question 98561
300/100=3 OR 3 MILES PER MINUTE=180 MPH
300(120)=2.5 0R 2.5 MILES PER MINUTE OR 150 MPH.
180-W=150+W
-W-W=150-180
-2W=-30
W=-30/-2
W=15 MPH FOR THE WIND.
PROOF
300/180=1 2/3 HOURS = 1 HOUR & 40 MINUTES.
300/150=2 HOURS 
2 HRS-(1 HOUR & 40 MINUTES)=20 MINUTES LONGER FLIGHT.