Task: Question Answering
Input (English): Problem: the average salary / head of allthe workers in a workshop is rs . 750 , if the average salary / head of 5 technician is rs . 900 and the average salary / head of the rest is rs . 700 , the total no . of workers in the work - shop is ? 
Options: a ) 18 , b ) 20 , c ) 22 , d ) 24 , e ) 26
Output (English): b