Task: Question Answering
Input (English): Problem: nhai employs 100 men to build a highway of 2 km in 50 days working 8 hours a day . if in 25 days they completed 1 / 3 part of work . than how many more emploies should nhai hire to finish it in time working 10 hours a day 
Options: a ) 60 , b ) 70 , c ) 80 , d ) 50 , e ) 40
Output (English): a