Task: Question Answering
Input (English): Problem: in covering a distance of 30 km , arun takes 2 hours more than anil . if arun doubles his speed , then he would take 1 hour less than anil . what is arun ' s speed ? 
Options: a ) 2 , b ) 5 , c ) 6 , d ) 7 , e ) 8
Output (English): b