In a family, mother's age is twice that of daughter's age. Father is 10 years older than mother. Brother is 20 years younger than his mother and 5 years older than his sister. What is the age of the father?

Options

A. 62 years
B. 60 years
C. 50 years
D. 55 years

Answer

B

Explanation

Suppose the age of daughter is x years.
Age of brother = x + 5 years
Age of mother = 2x years
2x - 20 = x + 5
2x - x = 5 + 20
x = 25 years
Age of mother = 2x = 2 x 25 = 50 years
Age of father = 50 + 10 = 60 years