The average age of 8 members of a group is 36 years. The age of the eldest member is 43 years. If we exclude that eldest member from the group, then what will be the average age (in years) of the remaining members?

Question: The average age of 8 members of a group is 36 years. The age of the eldest member is 43 years. If we exclude that eldest member from the group, then what will be the average age (in years) of the remaining members?

Solution:
Total age = (36 × 8)
= 288
After excluding the eldest member, total age = 288 - 43
= 245 year

∴Now the average age of remaining members = 245/7
= 35 years