How many pushups can you do?

[chriscox1121]

are we talking at one time? or what we do in sets?  If it's just one time.  I think my personal best is somewhere between 70-80.  But, I do push ups all the time.  When i do them in sets.  I usually start with 50-60 then work my way down to about 40.  The sets are determined by how I'm feeling.