Task: Question Answering
Input (English): Problem: mother , her daughter and her grand child weighs 130 kg . daughter and her daughter ( child ) weighs 60 kg . child is 1 / 5 th of her grand mother . what is the age of the daughter ? 
Options: a ) 46 , b ) 47 , c ) 48 , d ) 49 , e ) 50
Output (English): a