If from a group of 5 people, an old member is replaced by a new one, the average age is same as it was 3 years ago. What is the difference between the ages of the old member and the new one?	Choose the correct choice from the following choices:  A) 15  B) 77  C) 19  D) 66  E) 19
Explanation:   The present average age is (x + 3) when the old member is present and it equals to x when an old member is replaced by a new one.   The difference in the ages of the old member and the new one is equal to the difference in the total age before and after the replacement = 15 years.   15NSWER:15
<result>A</result>
If from a group of 5 people, an old member is replaced by a new one, the average age is same as it was 3 years ago. What is the difference between the ages of the old member and the new one?