Task: Question Answering
Input (English): Problem: at a special sale , 6 tickets can be purchased for the price of 3 tickets . if 6 tickets are purchased at the sale , the amount saved will be what percent of the original price of the 6 tickets ? 
Options: a ) 20 % , b ) 33.3 % , c ) 40 % , d ) 50 % , e ) 66.6 %
Output (English): d