Task: Question Answering
Input (English): Problem: a dealer offers a cash discount of 10 % and still makes a profit of 35 % when he further allows 20 articles to be sold at the cost price of 15 articles to a particular sticky bargainer . how much percent above the cost price were his articles listed ? 
Options: a ) 80 % , b ) 100 % , c ) 120 % , d ) 60 % , e ) 90 %
Output (English): b