[LeVoodoo]

This is probably very simple, but math just isn't my thing.

I'm on the bubble (4 left) of a 10 man sit and go, top 3 pays.
I am in the small blinds and it is folded to me.
What I am holding doesn't matter in this case.

If i push all in, the chances that the big blind calls is 40%.
If he calls my all in, the chances that I win are 50%.

I selected both numbers at random, by the by. But they aren't important anyways.
What are my overall chances of winning this pot (either preflop or postflop)?