Four years ago, the average age of a family of four persons was 18 years. During this period, a baby was born. Today if the average age of the family is still 18 years, the age of the baby is
(a) 1.2 yrs. (b) 2 yrs. (c) 2.5 yrs. (d) 3 yrs.
Question ID - 50899 | SaraNextGen Top Answer Four years ago, the average age of a family of four persons was 18 years. During this period, a baby was born. Today if the average age of the family is still 18 years, the age of the baby is
(a) 1.2 yrs. (b) 2 yrs. (c) 2.5 yrs. (d) 3 yrs.
Four years ago, the average age of a family of four persons was 18 years. During this period, a baby was born. Today if the average age of the family is still 18 years, the age of the baby is
(a) 1.2 yrs. (b) 2 yrs. (c) 2.5 yrs. (d) 3 yrs.
Sum of the ages of 4 members, 4 years ago = 
= 72 years.
Sum of the ages of 4 members now = 
88 years.
Sum of the ages of 5 members now = 
90 years.
Age of the baby = 
= 2 years.