working against the clock or not rushing

I would like to check how many days could be a decent amount of time to set with a client for those 4 works. how many days (or weeks..) do you usally set with clients to do similar jobs, or anyone use "when the work is done" aproximation?

I know it is also about designer skill and hours spent,and a lot of variables can enter here but i would like to know if there is an average time limit when designing those 4 types of work or what is usually the answer when the client ask for a day limit to send the work.

1-Static web 2-5 pages, original design and code.
2-Static web 2-5 pages, original design, code and Flash.
3-Dynamic web 1-10 pages, original design and xhtml + php code (product catalogue, CMS..)
4-Dynamic web 10+ pages , original design, xhtml + php , Flash. (product catalogue, CMS, e-commerce)

I think it varies for everyone, and only you know your own pace. So after doing those a few times you would know what sort of time frame you would feel comfortable with yourself.