Question 714868
let distance be y
time be x

distance = speed * time

y=450*(x-(25/60))

y=450*(x-5/12)
y= 450((12x-5)/12)

II plane

y= 500x

equate both equations

500x= 450(12x-5)/12

12*500x=450(12x-5)

6000x= 5400x-2250

600x=2250
x= 375 miles