Task: Question Answering
Input (English): Problem: one fourth of a solution that was 8 % sugar by weight was replaced by a second solution resulting in a solution that was 16 percent sugar by weight . the second solution was what percent sugar by weight ? 
Options: a ) 74 % , b ) 52 % , c ) 40 % , d ) 18 % , e ) 8.5 %
Output (English): c