(mph will be m/h)
P1 at 2pm rate of 650m/h
P2 at 6pm rate of 800m/h
difference of 4 hrs, means 4 hrs x 650m/h = 2600miles difference when P2 leaves.
assuming both planes are instantaneously at their speeds...
800m/h = 2600miles + 650m/h
-650m/h. -650m/h
150m/h = 2600miles
÷150. ÷150
=17.33 hours
= 17 hours and 20 minutes. This is putting 2 linear equations equal to each other.
