It takes me about 5-15 minutes to throw something on the wheel depending on how large or complex; then if you add the time of drying the clay, making handles, adding glaze, and firing. I would say it would take an entire day to finish a single cup. But you try to do them in groups to maximize efficiency.
I am still a novice so my answer is probably far from what it should be, haha.
RE: 2nd Semester of ceramics was a SUCCESS!