Task: Question Answering
Input (English): Problem: john had a stock of 700 books in his bookshop . he sold 50 on monday , 82 on tuesday , 60 on wednesday , 48 on thursday and 40 on friday . what percentage of the books were not sold ? 
Options: a ) 26.5 % , b ) 50 % , c ) 46.5 % , d ) 56.5 % , e ) 60 %
Output (English): e