Task: Question Answering
Input (English): Problem: two trains of equal length are running on parallel lines in the same direction at 46 km / hr and 36 km / hr . the faster train catches and completely passes the slower train in 45 seconds . what is the length of each train ( in meters ) ? 
Options: a ) 48.5 , b ) 62.5 , c ) 73.5 , d ) 87.5 , e ) 96.5
Output (English): b