[" 15."3" yr before,the average age of a family of "5],[" members was "17" yr.Due to birth of a new child,the "],[" average age is same today.The present age of child is."]

3 year before,the average age of a family of 5 members was 17 years. Due to birth of a new child,the average age is same today.The present age of child is

3yr ago, the average age of family of 5 members was 17yr . Even after the birth of a child , the average is same today. Find out the age of child.

3 yr ago, the average age of a family of 5 members was 17 yr. A baby having been born, the average age of the family is same today. The present age of the baby is

3 years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is :

Average age of a family of 4 members was 19 years, 4 years back. Birth of a new child kept the average age of the family same even today. How old is the child today?