Question 667747
Plane A speed = x
Plane B speed = x+40

They are moving away from each other
combined speed = 2x+40

Distance = 2000
time = 5

d= rt
2000= (2x+40)*5
2000=10x+200
1800=10x
x= 180 mi/h

180mi/h and 220 mi/h are their speeds