Correct Answer - Option 2 : 48 year
Given:
The average age of five persons = 30 years
Age of the person who leaves the group = 23 years
Calculation:
⇒ Total age of the group before a person leaves = 30 × 5 = 150 year
⇒ Total age of the group when the person leaves the group = 150 - 23 = 127 years
⇒ Total age of the group when a new person has joined = 35 × 5 = 175 year
⇒ Age of new person = 175 - 127 = 48 years
∴ The required result will be 48 years.
Alternate Solution:
The age of new person = y + nx = 23 + 5 × 5 = 48 years.
