Task: Question Answering
Input (English): Problem: a man traveled from the village to the post - office at the rate of 25 kmph and walked back at the rate of 4 kmph . if the whole journey took 5 hours 48 minutes , find the distance of the post - office from the village ? 
Options: a ) 70 m , b ) 80 km , c ) 20 km , d ) 10 km , e ) 73 km
Output (English): c