Task: Question Answering
Input (English): Problem: a contractor undertakes to complete the construction of a tunnel 720 meters long in 240 days and employs 60 men for the purpose . after 120 days , he finds that only 240 meters of the tunnel is complete . how many more men should be employ in order to complete the work in time ? 
Options: a ) 22 , b ) 27 , c ) 60 , d ) 88 , e ) 12
Output (English): b