On the first day of college, the principal addressed the students, pointing out some of the rules.
“The female dormitory will be closed for all male students, and the male dormitory to the female students. Anybody caught breaking this rule will be fined $20 for the first time. Anybody caught breaking this rule the second time will be fined $60. Being caught a third time will cost you $180. Are there any questions?”
One student raised his hand and asked, “How much for a season pass?”