Task: Question Answering
Input (English): Problem: a firm is comprised of partners and associates in a ratio of 2 : 63 . if 50 more associates were hired , the ratio of partners to associates would be 1 : 34 . how many partners are currently in the firm ? 
Options: a ) 5 , b ) 10 , c ) 12 , d ) 20 , e ) 25
Output (English): d