Aschool choir has 36 members. there are three times as many underclassmen as seniors. how many seniors are in the choir?

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.