Task: Question Answering
Input (English): Problem: the average salary of workers in an industry is rs . 200 the average salary of technicians being rs . 400 and that of non - technicians being rs . 125 . what is the total number of workers ? 
Options: a ) 277 , b ) 665 , c ) 662 , d ) 552 , e ) 281
Output (English): b