Ten years ago, the ages of the members of a joint family of eight people added up to 231 years. Three years later, one member died at the age of 60 years and a child was born during the same year. After another three years, one more member died, again at 60, and a child was born during the same year. The current average of this eight-member joint family is nearest to-
A. 21 years B. 22 years C. 23 years D. 24 years Answer: Option DShow Answer
Solution(By Apex Team)
Sum of the ages of 8 members, 10 years ago = 231 years
Sum of the ages of all members, 7 years ago
= (231 + 8 × 3 – 60) years
= 195 years
Sum of the ages of all members, 4 years ago
= (195 + 8 × 3 – 60) years
= 159 years
Sum of the present ages of all 8 members
= (159 + 8 × 4) years
= 191 years
∴ Current average age = $\Large\frac{191}{8}$ years
= 23.8 years ≈
24 years
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