Task: Question Answering
Input (English): Problem: a contractor undertook to do a piece of work in 6 days . he employed certain number of laboures but 7 of them were absent from the very first day and the rest could finish the work in only 10 days . find the number of men originally employed ? 
Options: a ) 17.2 , b ) 16.5 , c ) 17.5 , d ) 17.9 , e ) 17.3
Output (English): c