Task: Question Answering
Input (English): Problem: shahrukh starts from barabanki to fatehpur , 1 hour after ajay starts . shahrukh meets kajol 1.5 hours after shahrukh starts . if the speed of shahrukh is at least 20 km / h faster than the speed of kajol . what is the minimum speed of shahrukh to overtake ajay , before he meets kajol ? 
Options: a ) 32 , b ) 21 , c ) 27 , d ) none of these , e ) 18
Output (English): d