According to Wikipedia the Times only has 350 writers total. It's clear that the majority of these are not doing investigative journalism, they are following the candidates around and rewriting press releases and such. I don't see how the number of actual investigative journalists could possibly be more than 100.
The question isn't "writers" but all of the employees involved in actual news creation. I have no idea what it might actually be, but a 1:10 ratio between "operatives" and "support staff" is my guess.
