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September 18, 2014

September 18, 2014

Posted by **Anonymous** on Thursday, February 28, 2013 at 9:11pm.

- Math please help -
**Anonymous**, Thursday, February 28, 2013 at 9:44pmPlease can someone else help me?

- Math Ms. Sue please help -
**Reiny**, Thursday, February 28, 2013 at 10:32pmspeed of plane in still air --- x mph

speed of wind ------------ y mph

so going with the wind, speed = x+y

against the wind, speed = x-y

x+y = 158

x-y = 112

add them

2x = 270

x = 135

then 135 + y = 158

y = 23

speed of wind is 23 mph, speed of plane in still air = 135 mph

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