Question

many colleges determine the number of full time students f,by using the formula f=n/15 where n is the total number of credits for each semester if a student registers for 46140 credits how many full time students does the campus have. then what is the formula for n  n=

Answer 1

"A student" doesn't register for 46,140 credits, unless he wants to be very very busy.

If ALL of the students on campus register for 46,140 credits, then many colleges
would estimate the number of full-time students by using the formula

f = n / 15 = 46,140 / 15 = 3,076 students.

That's not the formula for 'n'.  'n' is the total number of credits for the semester,
and the question tells you what 'n' is.  Knowing 'n', the formula helps you find 'f'.