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November 20, 2014

November 20, 2014

Posted by **Christian** on Monday, November 7, 2011 at 9:09pm.

- Algebra -
**Steve**, Tuesday, November 8, 2011 at 5:42amIf the plane's air speed is s, and the wind speed is w

800/(s+w) = 5

s+w = 160

800/(s-w) = 8

s-w = 100

2s=260

s=130

so, w=30

800/160 = 5

800/100 = 8

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