SOLUTION: An airplane flying with the wind takes 2 hours to travel a distance of 420 miles. The return trip takes 3 hours flying against the wind. What is the speed of the airplane in stil

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Question 1185094: An airplane flying with the wind takes 2 hours to travel a distance of 420 miles. The return trip takes 3 hours flying against the wind. What is the speed of the airplane in still air and how fast is the wind blowing?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Speed with the wind, 420%2F2=210;
Speed against wind, 420%2F3=3%2A2%2A7%2A10%2F3=140;

r, plane speed
w, wind speed

system%28r%2Bw=210%2Cr-w=140%29
Simple use of Elimination Method