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January 27, 2015

January 27, 2015

Posted by **Ingrid** on Tuesday, September 27, 2011 at 11:34pm.

- Math -
**Corey**, Tuesday, September 27, 2011 at 11:45pmdistance=rate*time

d=rt

wind speed=w

plane spee=180+w

d=[(180+w)+w]*3 With wind

d=[(180+w)-w]*4 Against wind

[(180+w)+w]*3=[(180+w)-w)*4

(180+2w)3=180*4

540+6w=720

6w=180

w=30

The wind speed is 30 mph.

The plane in still air is 180+30, or 210.

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