Task: Question Answering
Input (English): Problem: bookman purchased 55 copies of a new book released recently , 10 of which are hardback and sold for $ 20 each , and rest are paperback and sold for $ 10 each . if 14 copies were sold and the total value of the remaining books was 360 , how many paperback copies were sold ? 
Options: a ) 8 , b ) 10 , c ) 12 , d ) 19 , e ) 16
Output (English): d