SOLUTION: An air traffic controller is tracking two planes. To start, Plane A is at an altitude of 3146 feet and Plane B is just taking off. Plane A is gaining altitude at 20.25 feet per sec

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Question 1141568: An air traffic controller is tracking two planes. To start, Plane A is at an altitude of 3146 feet and Plane B is just taking off. Plane A is gaining altitude at 20.25 feet per second and Plane B is gaining altitude at 80.75
feet per second.
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235)   (Show Source): You can put this solution on YOUR website!
I assume the question is when the planes will be at the same altitude.
A is 3146+20.25x, where x is the number of seconds.
B is 80.75x
they will be equal at the same altitude
80.75x=3146+20.25x
60.5x=3146
x=52 seconds
(they will be at the same altitude at 4199')
Answer by ikleyn(52884)   (Show Source): You can put this solution on YOUR website!
.
For your info: 

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