At the Ann Arbor campus of the University of Michigan in fall 2013, the proportion of students

Question:

At the Ann Arbor campus of the University of Michigan in fall 2013, the proportion of students who were Asian was approximately 2/15. The proportion of students who were Caucasian was approximately 2/3. Find the proportion of students who had ethnicities other than Asian and Caucasian. Write your result as a fraction.