The average age of a family of five members, five years ago, was $36$ years. During these five years, the family adopted a child. Currently, the avera...
Question
The average age of a family of five members, five years ago, was $36$ years. During these five years, the family adopted a child. Currently, the average age of the family remains the same as it was five years ago. What is the present age of the adopted child?