In a family, there are 4 members: 2 parents and 2 children. The average age of the parents is 35, and the average age of the children is 10. What is the average age of the family?
Q1. In a family, there are 4 members: 2 parents and 2 children. The average age of the parents is 35, and the average age of the children is 10. What is the average age of the family?
Answer: 22.5
Explanation: Total age of parents = 35 * 2 = 70, total age of children = 10 * 2 = 20. Total family age = 70 + 20 = 90. Average = 90 / 4 = 22.5.