Here come my remedial math skills...
Sum of Ages Of Team Member(s) divided by # of teammates.
Ie: 25+26+29+21+22=123
Then, divide 123 by the 5 team mates=24.6 (avg. age)
Sorry, i have nothing better to do than explain how to get an average; even though you prob. know how to do it already
...See what off-season does to me?
Edit: ****, by one minute