Concept explainers
To calculate: the air speed of the plane and the wind air speed.

Answer to Problem 41E
The air speed of the plane is 691.3 miles per hour and the speed of the wind is 91.3 miles per hour.
Explanation of Solution
Given information:
Flying distance between Indianapolis, Indiana and Phoenix, Arizona is 1800-mile.
Time taken by the airplane, flying into a headwind, to travel the 1800-mile distance is 3 hours.
Time taken by the airplane to travel the same distance on the return flight is 2 hours 30 minutes.
Formula used:
Calculation:
Let
From the formula used,
Add the equations.
Substituting for
Therefore, the air speed of the plane is 691.3 miles per hour and the speed of the wind is 91.3 miles per hour.
Chapter 7 Solutions
EBK PRECALCULUS W/LIMITS
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