faculty (not fuculty) ;)
Let s = # of students and f = # of faculty. We want to find s + f.
(1/12)s = 42. Mult. both sides by 12, we get s = 504.
(1/6)f = 6. Mult. both sides by 6, we get f = 36.
Then the total # of faculty and students combined is 504+36 = 540 (ans.)