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Aptitude · Q186

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Competitive Exams · Aptitude · question 186

Q186

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
E.
25 years

Answer: Option D

Solution

Answer: Option D
Solution:
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 = years
= 23.8 years 24 years