Question 401609
Let distance be x

Time west - Time east = 2 
x/400 - x/550=2
...
(550x-400x)/400*550=2
150x=220000*2
150x=440000
/150
x=440000/150
...
Distance = 2933 miles
..
Time east = 2933/550
Time east = 5.33 hours