Task: Question Answering
Input (English): Problem: the workforce of company x is 40 % female . the company hired 20 additional male workers , and as a result , the percent of female workers dropped to 50 % . how many employees did the company have after hiring the additional male workers ? 
Options: a ) 480 , b ) 500 , c ) 520 , d ) 460 , e ) 440
Output (English): c