SOLUTION: An airplane travelled 245 mph with the wind and 175 mph against the wind. Find the speed of the plane in still air and the speed of the wind.

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Question 933529: An airplane travelled 245 mph with the wind and 175 mph against the wind. Find the speed of the plane in still air and the speed of the wind.
Found 2 solutions by mananth, Alan3354:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let speed of plane be x
and speed of wind be y
with wind
x+y=245
against wind
x-y=175
solve the equations
2x=420
x=210 mph
Find y

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The plane's airspeed is the average of the 2 groundspeeds.
The windspeed is the difference between airspeed and groundspeed.