First of all, it doesn't matter if you've "been trained in college".

The fact that you have a college degree, in and of itself, is not going to affect your salary.
There are about 40 different kinds of Equity contracts so if you're an in an Equity show, the minimum for Broadway is ~$1600/wk. For an Equity tour, the minimum is ~$1008/wk. plus $700/wk. per diem. These figures will change depending on what your agent can negotiate for you and, of course, your previous professional experience. Non-Eq tours will earn less than this, generally speaking.