The first question should be a bit lengthy and should comprise of at least 10 pages, but for remaining u can cover each ques in about 8 pages. Let me tell you one thing clearly, nobody reads your paper, the examiner just scans your paper intelligently and he is over confident in this manner that he can analyze the whole writing by just glancing at it, so the presentation matters a lot, and he is justified in doing so when he has to check about 50 papers on daily basis.