Question 93495
250X=150(4-X) 
250X=600-150X
250X+150X=600
400X=600
X=600/400
X=1.5 HOURS FOR THE 250MPH FLIGHT
4-1.5=2.5 HOUR FOR THE 150MPH FLIGHT
DISTANCE=(250*1.5)+(150*2.5)
D=(375+375)
D=750