Three button width on screen Android

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http://stackoverflow.com – How can i set three buttons next to each other to fit screen size of screen in android. For 50% 50% of screen this is used. but if i want to add a third button how can i achieve this. i.e. 35% 35% 35% and 5% for space. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="wrap_content" android:layout_width="fill_parent" android:orientation="horizontal" android:weightSum="1.0"> <Button android:id="@+id/textbox3" android:layout_height="wrap_content" android:layout_weight=".5" android:layout_width="0dip" android:textSize="12sp" / (HowTos)