I'm writing a paper for university and my professor has some formal specification. We shall use Times New Roman, Arial or Tahoma as fonts. Clearly he thougth about Word when specifying this. So I searched for a fitting font in PDFLaTeX. As I want to write with serifs, I looked for one similar to Times New Roman and found newtx.
Now I want to know if this has the correct density (is this the correct term?), so if I can write as much characters as my colleagues using word and one of the mentioned fonts and not more. (Our limit is given in pages.)
My question: Has newtx a density similar to Times New Roman, Arial or Tahoma?
If there are any references for looking up such values, I'd like to learn this too.