I am very competent in word processing using MS Word and am confident that I can complete your project 100% error free within 10 days, provided that each article is less than 5000 words.
It is difficult to give a meaningful time frame for completing the work when the important detail of approximately how many words there are in each article is not stated in your project description, hence the time frame of 10 days I have given is on the assumption that each article is not more than 5000 words.
Although I am a new freelancer, I have substantial previous experience in report writing, editing, proofreading and related work, so rewriting these articles will be quite straightforward for me.