The average age of 5 member of a committee is the same is it was 3 years ago ,because an old member has been replaced by a new member . the difference between the age of old and new member is?
Correct Answer: 15 years
Explanation:
Increase in sum of age during 3 years = 3 x 5 years
= 15 years
So , the difference between ages of old and new member is 15 years
