The average age of a family of 6 members is 22 years. If the age of the youngest member is 7 years, what was the average age of the family at the birth of the youngest member?
1
22 years
2
20 years
3
16 years
4
18 years
The average age of a family of 6 members is 22 years. If the age of the youngest member is 7 years, what was the average age of the family at the birth of the youngest member?