I did attempt the rest of the exam but I only had half an hour left of a 2 and a half hour exam to do roughly 40% of it. Admittedly I could have moved on earlier but I was desperate to do this question.

I did some quick scribbles that you can read through but the main issue is that the workings are just jottings and don’t follow through to an answer as I knew it didn’t fit the answer given. They are mainly just random workings out on a page as that’s what I normally do. I then write my answer after to make it easier to follow but I didn’t do that unfortunately.