Task: Question Answering
Input (English): Problem: rahim bought 55 books for rs . 1500 from one shop and 60 books for rs . 340 from another . what is the average price he paid per book ? 
Options: a ) s . 17 , b ) s . 18 , c ) s . 16 , d ) s . 11 , e ) s . 10
Output (English): c