It's that simple but don't know how to do the maths.

Let's say vilain Cold Call Raise no matter what the position 40 % - 30 % - 20 % of the time, I'd like to know how often he will only hit a draw on the flop ? Is it possible to get an average possible range % ??
I'm defining some code colours for those who plays their draws passively.

Thanks in advance !