A man age is (3p+2q) years and his only son’s age is ‘p’ years while his only…

A man age is (3p+2q) years and his only son’s age is ‘p’ years while his only daughter’s age is ‘q’ years. Man’s son is three years elder than her sister. If man’s wife is five years younger than her husband who is 34 years old, then find average age of the family (in years).