Task: Question Answering
Input (English): Problem: a bullet train covers a distance in 50 min , if it runs at a speed of 48 kmph on an average . the speed at which the bullet train must run to reduce the time of journey to 40 min will be . 
Options: a ) 80 kmph , b ) 40 kmph , c ) 60 kmph , d ) 90 kmph , e ) 30 kmph
Output (English): c