SOLUTION: When a plane flies with the wind, it can fly 896 miles in 4 hours. When the plane flies in the opposite direction, against the wind, it takes 7 hours to fly the same direction. Wha

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Question 962284: When a plane flies with the wind, it can fly 896 miles in 4 hours. When the plane flies in the opposite direction, against the wind, it takes 7 hours to fly the same direction. What is the average velocity of the wind?
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
r+w, speed with wind
r-w, speed against wind
w, speed of wind
d, distance refered
T, time against wind
t, time with wind
-
UNKNOWN: r, w
KNOWN: d=896, T=7, t=4

system%28%28r%2Bw%29T=d%2C%28r-w%29%2At=d+%29

Final goal is to solve for r and w but get the value for w.
Solve for r and substitute to find w.