For homewor, a student had to complete 15 problems total. if she finished 6 problems in class, what is the ratio of problems she still needs to complete to problems that she already finished?

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct