Task: Question Answering
Input (English): Problem: the ratio of the present age of viju to that of aju is 7 : 2 . 4 years from now , the ratio of the ages of viju to aju will be 5 : 2 . what was viju age 5 years ago ? ( rbi assistant 2015 ) 
Options: a ) 24 , b ) 18 , c ) 12 , d ) 16 , e ) 13
Output (English): d