There are four people in a family. The average age of these four members is 32 years. The father's age is 50 years, the mother's age is 46 years, and the daughter's age is 20 years. Find the age of the only son in the family.
Answer & explanation
Correct answer: option 4
ATQ,
Sum of age of the family = 32 × 4 = 128
Given, father's age = 50 years
mother's age = 46 years
daughter's age = 20 years
So, age of the only son of the family = 128 - 50 - 46 - 20
= 12 years