Q156
In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?
A.
10 years
B.
10.5 years
C.
11 years
AnswerD.
12 years
Answer: Option C
Solution
Answer: Option C
Solution:
Sum of ages of father and mother= (35 × 2) years
= 70 years
Sum of ages of father, mother and son
= (27 × 3) years
= 81 years
∴ Son's age = (81 - 70) years
= 11 years