[" Three years ago average age of "4,8],[" was is years,c joined them now the aver "],[" become "28" years.How old is "^(2)c" ,"20w" ? "]

Three years ago the average age of A and B was 18 years.With C joining them now,the average becomes 22 years.How old is she now?

Three years ago, the average age of a husband , wife and child was 26 years, and that of the wife and the child , 5 years ago, was 20 years . The present age of the husband is :

The average age of a husband and wife was 23 years when they were married 5 years ago. The average age of the husband , the wife and a child who was born during the interval , is 20 years now. How old is the child now ?

The average age of a husband and wife was 23 years when they were married 5 years ago. The average age of the husband, the wife and a child who was born during the interval, is 20 years now. How old is the child now?