Question 1012050
.
12 years 08 months
10 years 04 months
14 years 06 months
08 years 03 months
15 years 10 months
08 years 05 months
10 years 06 months
12 years 08 months
____________________
.
89 years 50 months 
.
(89 years 50 months)/8=(88 years 62 months)/8=11 years 7.75 months
.
ANSWER: The average age is 11 years 7.75 months.