On the first day at university, the supervisor announced the strict rules of the school to the students: “Male students are absolutely prohibited from entering the female dormitory, and vice versa.”
– Those who violate this rule for the first time will be fined $20, $60 for the second offense, and if caught for the third time, you will face a fine of up to $180. Are there any questions?
A voice from a male student in the crowd asked:
– So, what is the total cost for the entire academic year, sir? Is there a discount for paying for the whole year upfront?
