NEW CHALLENGE FOR FRESHMEN AND SOPHOMORE CADETS

Congratulations to Cadet Elvin Laracuente who correctly answered that King Richard was 84 years old when he died.  Incidentally, the problem was originally posited by Diophantus of Alexandria (hence the graphic included as a hint below).  He reportedly had it chiseled on his tombstone. He was a fun guy.  Good job Elvin!

Here's the latest challenge for freshmen and sophomore cadets.  Juniors and seniors are ineligible and may not provide assistance of any sort.

King Richard was a boy for one-sixth of his life. After one-twelfth more, he acquired a beard. After another one-seventh, he married. In the fifth year after his marriage his son was born. The son lived half as many years as his father. King Richard died 4 years after his son. How old was King Richard when he died?

So?  There's no trick here--it's just simple math.  Get on it.  This challenge will close out at 0730 Monday, 14 October 2013.