SOLUTION: They often fly from Philly to Chicago, a distance of 780 miles. On one particular trip they fly into the wind and the flight takes 2 hours The return trip, with the wind is behin

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Question 698858: They often fly from Philly to Chicago, a distance of 780 miles.
On one particular trip they fly into the wind and the flight takes 2 hours
The return trip, with the wind is behind them, only takes 2 hours.
If the wind speed is the same on each trip,
Find the speed of the wind and
Find the speed of the plane in still air.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
They often fly from Philly to Chicago, a distance of 780 miles.
On one particular trip they fly into the wind and the flight takes 2 hours
The return trip, with the wind is behind them, only takes 2 hours.
If the wind speed is the same on each trip,
Find the speed of the wind and
Find the speed of the plane in still air.
--------------------
Same time --> no wind
-------------
Find the speed of the plane in still air.
THAT'S CALLED AIRSPEED, NOT the speed of the plane in still air.
= 780/2 = 390 mi/hr