In a college , 1/2 of them are first year students and the rest are second year students. Out of the first year students 4/5 have not decided on their majors . The fraction of the second year students who decided on the majors is three times the fraction of the first year students who decided on the majors. what is the fraction of the second year students who did not decide on the majors.
I have question, is the question fraction of second years who did not decide wrt to entire student population or just the second year students?