Task: Question Answering
Input (English): Problem: a boat running downstream covers a distance of 22 km in 4 hours while for covering the same distance upstream , it takes 5 hours . what is the speed of the boat in still water ? 
Options: a ) 2.75 , b ) 5.95 , c ) 7.95 , d ) 3.25 , e ) 4.95
Output (English): e