I'm the best candidate for this because writing comes naturally to me, I have a broad depth of knowledge in many different fields, and I have a great deal of experience.
I would be happy to submit the first article of 300 words free and we could proceed from there. From what you've described you're looking at 30,000 words or 100 articles of 300 words each, or to be blunt, about 0.37 cents per word. That's a cut-rate price, but I'm willing to do it and deliver providing I get three progressive payments, each $37, for 34 articles, then another after 67, and finally the last after 100 articles.
I have written 35+ books and hundreds of magazine articles. I'm willing to bet that I can produce some of the articles from my broad knowledge. Other articles will probably require some research, which I'm willing to do. The final result will be 100 articles, none of which will win the Pulitzer, but all of which will be accurate, well written, readable, and fit for publication.
I also believe that being a native English speaker, my work will be better than most other bidders.
In addition, I am bidding for the work to be completed not in 20 days but in 10 days! I know my capabilities and 3000 words per day is something that I can do, especially since these articles are presumably not linked or progressive and I would assume, somewhat general.
Award this to me immediately and I can get started.