SOLUTION: An airplane flies 320 miles with the wind and 280 miles against it in the same length of time. If the speed of the wind is 30 mph, what is the speed of the airplane in still air?
Algebra.Com
Question 447686: An airplane flies 320 miles with the wind and 280 miles against it in the same length of time. If the speed of the wind is 30 mph, what is the speed of the airplane in still air?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
320/x+30=280/x-30
280x+8400=320x-9600
40x=18000
x=450 mph..
RELATED QUESTIONS
an airplane flies 500 miles with the wind and 340 miles against the wind in the same... (answered by lwsshak3)
an airplane flies 450 miles with the wind and 300 against the wind in the same length of... (answered by Ruli)
An airplane flies 490 miles with the wind and 330 against the wind in the same length of... (answered by checkley77)
An airplane flies 490 miles with the wind and 340 against the wind in the same length of... (answered by Alan3354)
An airplane flies 440 miles with the wind and 340 against the wind in the same length of... (answered by mananth)
An airplane flies 410 miles with the wind and 330 against the wind in the same length of... (answered by solver91311)
An airplane flies 490 miles with the wind and 330 against the wind in the same length of... (answered by lynnlo)
A plane flies 440 miles with the wind and 320 miles against the wind in the same length... (answered by ankor@dixie-net.com)
A plane flies 480 miles with the wind and 320 miles against the wind in the same length... (answered by checkley75)