Nice to start things off with a win. Random number for next round will be 48.
And your little problem (with attendance percentage) doesn't work since you can't have 75% of 3 people as that's how many came back in one of the things, and yes I tried to do it as I was bored. Here is my answer which is right if you can say you can have parts of a person. And you can't have 45% of 2.25 people as well.
But my answer is 56.2375% of those who were there to start off with remained