Question

Sol. (4) Increase in ages of five members in 3 years ( =.(3 times 5) ) years ( =15 ) years As average age remains same,
( therefore ) Required difference ( =15 ) years

# Ex.2. After replacing an old member by a new mem- ber, it was found that the average age of five members of a club is the same as it was 3 years ago. The difference between the ages of the re- placed and the new members is SSC CGL (Tier-IT) 2014 (1) 2 years (2) 4 years (3) 8 years (4) 15 years

Solution