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March 30, 2015

March 30, 2015

Posted by **PLEASE NEED HELP** on Thursday, March 29, 2012 at 11:05pm.

- algebra -
**Anonymous**, Friday, March 30, 2012 at 11:45amDistance (times) rate (times) time

Let p represent the speed of the plane in still air

Let w represent the speed of the wind

600= (p+w)(4)

600= (p-w)(5)

600 divided by 4= 150= p+w

600 divided by 5= 120= p-w

150+120= 270=2p

--- ---

divide 2 2

=135 =p

p+w= 150

135+w= 150

-135 -135

--------------

w = 15

The speed of the plane in still air is 135 mph.

The speed of the wind is 15 mph.

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