7 people average age is 30. youngest person age is 8. find average of the people when youngest was born.  Choose the correct choice from the following answers:
A) 23  B) 24  C) 25  D) 22  E) 27

Rationale: "average age of people = 30 so have total age = 210 before 7 years we have to deduct each person age by seven years 210 - 56 = 154 so average age would be 154 / 7 = 22 answer : d"
Answer: D