How to solve a family tree problem (video puzzle)

I know, I know. I have been away for a while. Nothing new is happening in my research as I don't have a lot of time lately. But I did come across this fun post and thought I might share. Spoiler Alert - If you want to try to solve the puzzle, don't read click the link yet.

BestWeekEver is a funny sarcastic blog that I read from time to time (when I have... time). In this post they decided to tackle a common genealogical dilema of trying to reconstruct ages of people in a family from an oral (in this case filmed commercial on YouTube) history. Can you figure out the kids age from the video below:



There's actually a second video with a few more details:



Ok, figure it out yet? Now go read the post on BestWeekEver.