Task: Question Answering
Input (English): Problem: at present the ratio between the ages of arun and deepak is 4 : 3 . after 6 years arun ' s age will be 26 years . what is the age of the deepak ? 
Options: a ) 15 , b ) 20 , c ) 18 , d ) 22 , e ) 35
Output (English): a