scenario: playing vs a reg with no other info available. 100BB deep HU 3bet pot. you open, he 3bets, you defend, flop TT3r, he cbets.

Question #1: Without looking at your cards how often do you have a T?

Question #2: Without looking at your cards how often should you be raising here? 

I'm basically trying to construct a GTO raising range here. According to my calculations we flop a T about 16% of the time. Is there an answer to how often we should be raising or is it just as often as our opponent lets us? From my experience people go a bit crazy in these spots both cbetting and raising.