Task: Question Answering
Input (English): Problem: a train covers a distance of 100 km in 1 hour . if its speed is decreased by 15 km / hr , the time taken by the car to cover the same distance will be ? 
Options: a ) 1 hr , b ) 1 hr 10 min , c ) 50 min , d ) 1 hr 30 min , e ) 1 hr 45 min
Output (English): b