Airline A flight from Chicago to San Diego arrives 4 hours after depature. During the same time frame, Airline B flight from San Diego arrives 3.5 hours after departure. Assume the each plane is traveling at the same average speed, determine their average speed in still air and the average speed of the wind due to the jet sream. The distance between each city is approx. 1750 miles.
Anyone who can help will be greatly appreciated!! Please explain how you arrived at your answer!!
I apologize, I didn't know which catagory to put this under!!
2006-07-17 06:54:53 · 2 answers · asked by prettycute4u62040 4 in Science & Mathematics ➔ Mathematics
What is the average speed of the 2 planes in still air and the average speed of the wind due to the jet stream?
2006-07-17 07:04:17 · update #1
assume s is the average speed of the plane in still air, x is the speed of the wind, then
1750/(s+x)=3.5 (x+s is the plane's speed from SD-->Chicago)
1750/(s-x)=4 (x-s is the plane's speed from Chicago-->SD)
You get s=468.75, x = 31.25. The unit is miles/hour.
2006-07-17 07:20:04 · answer #1 · answered by Stanyan 3 · 2⤊ 0⤋
I see the variables but what is the question?
2006-07-17 14:01:00 · answer #2 · answered by sapphiresunstar 3 · 0⤊ 0⤋