SOLUTION: If a bird can fly 20 miles upwind in 2 hours and 40 minutes, and can return to its starting point in 2 hours and 5 minutes, how fast is the wind and how fast is the bird? Answer in

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Question 1077971: If a bird can fly 20 miles upwind in 2 hours and 40 minutes, and can return to its starting point in 2 hours and 5 minutes, how fast is the wind and how fast is the bird? Answer in miles per hour.
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
r, speed of the bird
w, speed of wind


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Elimination Method on this system