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 at present?
A. 32 years B. 36 years C. 40 years D. 48 years Answer: Option CShow Answer
Solution(By Apex Team)
Let the mother’s present age be x years
Then, the person’s present age
$\begin{array}{l}
=\frac{2}{5} x \text { years } \\
\therefore \frac{2}{5} x+8=\frac{1}{2}(x+8) \\
\Rightarrow 2(2 x+40)=5(x+8) \\
\Rightarrow x=40
\end{array}$
HI 
EN 