Task: Question Answering
Input (English): Problem: there is 60 lit of milk and water in which milk forms 84 % . howmuch water must be added to this solution to make it solution in which milk forms 50 % 
Options: a ) 40.8 , b ) 19.75 , c ) 20.75 , d ) 21.75 , e ) 22.75
Output (English): a