Task: Question Answering
Input (English): Problem: solution y is 30 percent liquid x and 70 percent water . if 2 kilograms of water evaporate from 6 kilograms of solution y and 2 kilograms of solution y are added to the remaining 4 kilograms of liquid , what percent of this new solution is liquid x ? 
Options: a ) 33 % , b ) 35 1 / 2 % , c ) 37 % , d ) 40 % , e ) 42 %
Output (English): d