The number of members in a family is 7. The eldest among them is 90 years old, and the youngest one is 10 years old. The average age of remaining members is 22 years. If the eldest member dies after 5 years, what will be the average age of the family after his death(in years)?
1). 23
2). 24
3). 25
4). 27
After 5 years, the age of eldest person = 95 years
After 5 years, the age of youngest person = 15 years
After 5 years, average age of remaining 5 persons = (22 + 5) years = 27 years
After 5 years, sum of ages of remaining 5 persons = 27 × 5 = 135 years
When eldest member dies, family will have six members.
∴ Average age of family = (135 + 15)/6 = 25 years5. The average of 23, 34, x, 21, 19 and 18 is 21. What is the value of x?