The average age of a family of 5 members is 20 years. with the youngest member being 5 years old...

The average age of a family of 6 members is 25 years with the youngest member being 8 years old. What was the average age ( in years) of the family just before the birth of the youngest member?

The average age of a family of 6 members is 22 yrs. If the age of the youngest member be 7 yrs, then what was the average age of the family at the birth of the youngest member?

The average age of a family of five members is 24.If the present age of the youngest member is 8 yr, what was the average age of the family at the time of the birth of the youngest member?

The present average age of family of four members is 36 years . If the present age of the youngest member of family be 12 years , the average age of the family at the birth of the youngest number was