Question 86681
450/(x-1.5)=1200/x now cross multiply
1200(x-1.5)=450x
1200x-1800=450x
1200x-450x=1800
750x=1800
x=1800/750
x=2.4 hours for the time of the flight.
1200/2.4=500 miles per hour for the speed of the plane.