How to specify percentage width for TextView in Linearlayout - Android?

I was able to achieve this with the following XML,

   <LinearLayout
    android:layout_width="match_parent" 
    android:layout_height="wrap_content">

        <TextView
            android:text="left" 
            android:layout_width="0dp" 
            android:layout_height="wrap_content" 
            android:layout_weight=".60" /> 

        <TextView
            android:text="right" 
            android:layout_width="0dp" 
            android:layout_height="wrap_content" 
            android:layout_weight=".40" />

    </LinearLayout>

You can replace the TextView with EditText or Button or whatever elements that fit your needs..

Note: Make sure to set the  layout_width to 0dpor your views may not be scaled properly.