# Problems on Ages- Aptitude Questions and Answers

 The average age of 5 members of a family is 21 years. If the age of the youngest member be 5 years,find the average age of the family at the time of the birth of the youngest member? A) 24 years B) 25 years C) 20 years D) 28 years Correct Answer : 20 years Explanation :At present the total age of the family = 5 * 21 = 105 The age of the youngest member be 5 years The total age of the remaing family member during 5 year 4*5=20 after birth of youngest member The total age of the family at the time of the birth of the youngest member that is 5 year ago => present the total age of the family -age of the youngest member- change in total age of the remaing family member during 5 year => 105-5-20 = 80 Therefore, average age of the family at the time of birth of the youngest member =>total age of the family at the time of the birth of the youngest member / number of member in family at the time of birth of the youngest member =>80/4 = 20 Post/View Answer Post comment Cancel Thanks for your comment.! Write a comment(Click here) ...