Son's age is one-third of father's age. In 12 years from now son's age will be one-half of the father's age. What is the age of the son at present?
সমাধান
সঠিক উত্তর: Option D
Suppose,
Father 's age = x years
Son's age = x/3 years
After 12 years,
after 12 years,
Father's age =x+12 years
Son's age = x/3 + 12 years
here,
x/3+12 = 1/2 ( x+12)
or. x = 12
