After replacing an old member by a new member, it was found that the average age of eight members of a club is the same as it was two years ago.What is the difference between the ages of the replaced and the new member?
Select: A) 2 years B) 4 years C) 8 years D) 16 years E) None of these
Explanation :   Age decreased = (8 x 2) years   16 years   So, required difference =16 years.   Answer : 16 years
<result>D</result>
After replacing an old member by a new member, it was found that the average age of eight members of a club is the same as it was two years ago.What is the difference between the ages of the replaced and the new member?