Apologies to Liberty Park – you didn't eat my TV licence. It just took you 6 days to get it from the post bag into my letter box.
However, for all budding mathematicians, here is a sum that doesn't work:
500 students, 8 washing machines, 2 out of order does not equal happy Laura who wants to wash her clothes!
Oh, and any ideas of a flat warming are out – maximum of 2 guests at any time of the week or weekend. And the security guard stands at the door to check – sorry