If you help me I’ll give brainliest

Pls! does anybody know a shortcut for answering these types of questions in the future?

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30