Task: Question Answering
Input (English): Problem: in the faculty of reverse - engineering , 200 second year students study numeric methods , 400 second year students study automatic control of airborne vehicles and 100 second year students study them both . how many students are there in the faculty if the second year students are approximately 60 % of the total ? 
Options: a ) 834 , b ) 750 , c ) 633 , d ) 654 , e ) 812
Output (English): a