Why did some students decide to pay for photocopying? Why did some not pay?

can you explain it better

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

where is the rest of the question. this isn't making sense. can you upload a picture of the question?

what is the question?