After replacing an old member by a new member, it was found that the average age of five members of a club is the same as it was 3 years ago. What is the difference between the ages of the replaced and the new member?	Choose the most appropriate option
A) 2 years  B) 4 years  C) 8 years  D) 15 years  E) 17 years
Solution   Age decreased	= (5 x 3) years   15 years   So, required difference =15years.   Answer 15 years
<result>D</result>
After replacing an old member by a new member, it was found that the average age of five members of a club is the same as it was 3 years ago. What is the difference between the ages of the replaced and the new member?