Stacking Ranger Bonuses

[Zahir ibn Mahmoud ibn Jothan]

Mine is a simple question.

Rangers get bonuses to various skills for various reasons, and different ones from archetypes, but I'll keep this simple.

Survival

Rangers get Favored Enemy, Favored Terrain, and Track, each of which provides bonuses to Survival.

It is clear to me that the Track ability would stack with either Favored Terrain or Favored Enemy, but can the Favored Enemy and Favored Terrain bonuses stack? They both seem untyped, and thus they would.

A very simple example:

8th level Ranger, with Favored Enemy Human +4, and Favored Terrain Forest +4, will he get a total of +12 from Class abilities (including the +4 from Track) for Survival when tracking a human in the forest?

Obviously Track is only involved for Survival, but the same question can be applied to say Knowledge (local) when done by an Urban Ranger in his favored city regarding his favored enemy.

[Zhayne]

Yes, they stack. They are untyped bonuses from different game elements.

[Endorolf]

Yes, so technically the roll for a level 8 Ranger would possibly be d20 + 28, which is 12 for the stack bonuses, 8 for ranks, 5 for wisdom bonus, and 3 for the automatic bonus for a class skill with ranks in it.