An air traffic controller is tracking two planes. To start, Plane A is at an altitude of 4500 feet and Plane B is at an altitude of 4185 feet. Plane A is gaining altitude at 45.25 feet per second and Plane B is gaining altitude at 50.5 feet per second. How many seconds will pass before the planes are at the same altitude? seconds What will their altitude be when they're at the same altitude? O feet

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