Essay
A plane travels 1000 miles in 2 hours with a tailwind. The return trip takes 2.5 hours with a headwind. Let p be the rate of the plane in still air in miles per hour and let w be the rate of the wind in miles per hour. Determine the two equations of the system described here.
Solve the system by the method of substitution. Interpret the solution.
Correct Answer:

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