Way too long
30 to 40 min max
The speed of download really depends on internet speed. The average download time of FIFA 15 is 5-6 hours. GIve or take, ofcourse.
Go to bigdownload click games and type in mafia 2 in the search bar. click the download which says mafia 2 demo. click save and enjoy! (It can take a long time downloading. by saying that i mean a few hours)
Download it and find out :). But seriously all downloads take anywhere from 10 minutes to an hour. Just depends. Your BOX will tell you the percentage of completion which will give you a good idea.
Maybe 2 hours or so
It take about 2 hours to 5 hours to do the forex demo. You can read more information at www.fxcm.com/open-free-100k.jsp or www.thepowhatan.com/forex-demo-accounts/
as many times as you want actualy, but sometimes the developers decide to take the demo down, if they are in the process of making the game, from example: battlefield bad company 2. they had a demo up for a while, then when they were about to release the game however, they took the demo of the psn store hope i made everything crystal clear for you.
how to take fphg2399mf6 out of demo mode
it takes 1 hour to download
well when you download it, its pretty quick.
3 sec