The PhD would take approximately four years post bachelor's to complete. The actual length of time depends much on how long it takes a student to prepare and defend their dissertation, which is an individual student project advancing an original view point on a topic of the students choosing with extensive supporting research and approved by a designated committee.
you have to stay in college for 6 years
About 30 years.
27 years
4 years
as many years as they live if they stay at it
12
333 years!
17 years
2 years
4 years
About 333 years.
75 years