Question

A is 5 years younger to his brother B. At the time of birth of his sister C, the age of his father D was 30 years and that of his mother E was 28 years. The age of his sister C was 6 years at the time of birth of his brother B. What was age of his father D at the time of the birth of A?
1. 41 years
2. 40 years
3. 31 years
4. 30 years

Answer 1

Correct Answer - Option 1 : 41 years

Given∶

A is 5 years younger to his brother B

At the time of birth of his sister C, the age of his father D was 30 years and that of his mother E was 28 years.

The age of his sister C was 6 years at the time of birth of his brother B.

Formula Used∶

Concept of Linear Equation.

Calculation∶

The age of A’s Sister C at the time of birth of his brother B = 6 years.

A’s sister is 6 + 5 = 11 years elder than A.

The age of his father D at the time of birth of A = 30 + 11 = 41 years

∴ the age of D at the time of the birth of A is 41 years.