• # question_answer A person's present age is two fifth of the age of his mother. After 8 years, he will be one half of the age of his mother. How old is the mother a present? A) 40 years           B) 32 yearsC) 36 years           D) 48 years

Suppose the present age of his mother = x years Then, the present age of person $\frac{2}{5}\,\,x\,\,years$ Now, after 8 years, $\frac{2}{5}\,\,x+8=\frac{1}{2}\,\,(x+8)$ $4x+80=5x+40$ $x=40\,\,years$ Hence, the mother's present age = 40 years