iOS Autolayout: two buttons of equal width, side by side

Question

I am currently having difficulty with AutoLayout. I am using interface builder and am trying to position two buttons of equal width side by side as illustrated in the follow

Answer 1

You can check my example - you can easy aim this, by using proportional constraint. Also you can easy aim proportional multiple UIViews. Please look attached example

https://dl.dropboxusercontent.com/u/48223929/TestViewController.xib