SOLUTION: Please help me with this math problem solving: Thank you, really apprecite it. Dave and Sandy Hartnarft are frequent flyers wit Delta Airlines. They often fly from Philadelphia

Question 956724: Please help me with this math problem solving: Thank you, really apprecite it.
Dave and Sandy Hartnarft are frequent flyers wit Delta Airlines. They often fly from Philadelphia to Chicago, a distance of 780 miles. On one particular trip, they fly into the wind, and th flight takes 1 and 1/2 hours. If the wind speed is the same on each trip, find the speed of thewind and dinf the speed of the plane in still air.
Found 2 solutions by Alan3354, josmiceli:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Dave and Sandy Hartnarft are frequent flyers wit Delta Airlines. They often fly from Philadelphia to Chicago, a distance of 780 miles. On one particular trip, they fly into the wind, and th flight takes 1 and 1/2 hours. If the wind speed is the same on each trip, find the speed of thewind and dinf the speed of the plane in still air.
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With that info you can find the groundspeed.
780 mi/1.5 hr = 520 mi/hr
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The windspeed is added to or subtracted from the plane's airspeed to get the groundspeed.
Upwind: GS = AS - W
Downwind: GS = AS + W
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This is assuming a direct headwind or tailwind.

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
You're missing some information.
The unknowns would be
windspeed
speed of plane in still air
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There is only 1 equation possible here,
but you have 2 unknowns.
Check problem again
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