11. 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?
A. 2 years B. 4 years
C. 8 years D. 15 years
Answer:
Age decreased = (5 x 3) years
15 years
So, required difference =15years.
