SOLUTION: An airplane which maintains an average speed of 350 miles per hour an airport at 8 am. A jet following that course, at a different altitude,passed the same airport at 10 am and ove

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Question 979834: An airplane which maintains an average speed of 350 miles per hour an airport at 8 am. A jet following that course, at a different altitude,passed the same airport at 10 am and overtook the same airplane noon. At what rate was the jet flying?
Answer by josgarithmetic(39620) (Show Source):
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Rethink this as the airplane leaves airport at 8AM, and the jet "leaves the airport" at 10AM. Both vehicles are the same distance from the airport on parallel paths at noon. The time quantities are easily found.

__________________speed____________time___________distance
pln_______________350_______________4______________d
jet________________r________________2______________d

Two unknown variables. Examine the data table to understand, and then continue.