Marcie needs to decide whether to spend $8,000 on a two-year degree that will qualify her for a $32,000 a year job or go to work now and make $16,000 a year. She will work part-time while in college and make about $4,000 a year. (For purposes of this exercise disregard the effects of interest or inflation.) How many years will it take Marcie to recover her investment if she goes to college?