Under the assumption that you are active on a daily basis, how long does it take to get to 200 activites?
every two weeks you will gain 14 activities if you will post every day even 1 post. so you will need 200 day to get 200 activity, but you must post every days something
more precisely is to say that to get 200 activity you must have minimum 200 posts, you have to post minimum 1 post every two weeks, you can gain maximum 14 activity points every two weeks. so you can have 200 activity after minimum 200 days.