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December 21, 2014

December 21, 2014

Posted by **Meghan** on Wednesday, February 24, 2010 at 4:30pm.

I cant figure out how to solve this. Please help me

- Algebra -
**Tiffany**, Wednesday, February 24, 2010 at 4:45pmuse variables p for plane and w for wind and the equations:

(p+w)x 2hours = 360 miles

(p-w)x 2hours = 300 miles

divide by 2

p+w=180

p-w=150

combine the two equations so w cancels

2p = 330

divide by 2 to get the speed of the plane.

p=165

put the plane back into the equation to get the rate of the wind

165+w = 180

w = 15m/h

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