In scrabble if 1 word is formed and you add to it (the first wotd was not built by you) and you get 2 tripple?

Question

word scores (1 you already had) do you get creddit for both tripple word scores. ex: cant to canteens 3 3

Answer 1

You only get bonus points for the colored squares that you cover during your turn not the previously covered squares.

Answer 2

Dusie is correct.

Answer 3

If a triple word score was already covered when you made the new word, then you do not get that triple word score, but you would get the other one.