Task: Question Answering
Input (English): Problem: excluding stoppages , the speed of a bus is 72 kmph and including stoppages , it is 45 kmph . for how many minutes does the bus stop per hour ? 
Options: a ) 7 min , b ) 8 min , c ) 9 min , d ) 10 min , e ) 55.8 min
Output (English): e