On the first day of college, the Dean addressed
the students, pointing out some of the rules:

"The female dormitory will be out-of-bounds for
all male students, and the male dormitory to the
female students. Anybody caught breaking this rule
will be fined $20 the first time."

He continued, "Anybody caught breaking this rule
the second time will be fined $60. Being caught a
third time will cost you a fine of $180. Are there
any questions?"

At this point, a male student in the crowd
inquired: "How much for a season pass?"