Writing an article wont be much of a problem. I have had an experience of writing articles for universities, have received plenty of awards and recognition, numerous in my college, one abroad. So you can leave that up to me.
Depending on the word limit and the topic i have to write the article on, i will do the necessary research and use my own knowledge to write the article.
The time i will require depends on the word limit and the topic too. However it shouldn't take more than a couple of hours to complete a fully researched based article of up to 3000 words.