Task: Question Answering
Input (English): Problem: if 20 liters of chemical x are added to 80 liters of a mixture that is 30 % chemical x and 70 % chemical y , then what percentage of the resulting mixture is chemical x ? 
Options: a ) 32 % , b ) 35 % , c ) 38 % , d ) 41 % , e ) 44 %
Output (English): e