This question can be answered by the question that was asked before, which was:
How Do I Write Good Quality Content.
This gives you the basis on writing them quickly and intelligently. It is easier to answer popular questions, because you already have the format and the subject material. If you answer the questions smartly, your article will appear intelligent as well.

The added benefit is that people will use your article as a resource and it can become what is called linkbait (people will just start linking to your article). The more useful, clever, unique, resourceful, etc. your article is, the bigger the piece of linkbait it becomes.