Is it considered rude to answer a question with a question? For instance: Q. Did you eat those cookies? A. Why? Would the correct response be "Yes I did (or no I did not), why do you ask?"
- Anybody can ask a question
- Anybody can answer
- The best answers are voted up and rise to the top
The context of the question is all important.
Sometimes a question as an answer can be a polite commiseration.
i.e. The answer here implies that the reason for the slowness of the train is unknown at this point, and worrying about it is not going to do any good.
Answering a question with a question needn't be considered rude, and is in fact used in linguistics and philosophy to better understand the subject matter at hand. By replying, "why do you ask", there can be a greater understanding between the two of you with an intent to better solve or dissolve the situation.