I have already written my Economics EE on what factors have caused public transportation ridership to decline in the US in recent years .
My Math IA is currently on whether population density affects the ridership of public transportation in the US.
As you can see, it is not the same topic but it is very similar and I was wondering if I was allowed to use writing from my EE (my own) and incorporate it into my Math IA. Would it count as duplication?
Anything helps so thank you in advance.