A got married 8 years ago.  Today her age is \(\frac{6}{5}\) times her age at the time of marriage.  His son's age is \(\frac{1}{8}\) times her age.  The age of her son is?

6 years 

       A                              A

Today's age              Marriage time age

⇒    6              :              5         

 (difference  1R   = 8 years)

So, Today's age of  A = 6R = 48 years  

Son's age = 48 × \(\frac{1}{8}\) = 6 years