Task: Question Answering
Input (English): Problem: there are 200 female managers in a certain company . find the total number r of female employees in the company , if 2 / 5 of all the employees are managers and 2 / 5 of all male employees are managers . 
Options: a ) r = 300 , b ) r = 400 , c ) r = 500 , d ) 600 , e ) none of these
Output (English): c