Task: Question Answering
Input (English): Problem: a train leaves mumabai at 9 am at a speed of 30 kmph . after one hour , another train leaves mumbai in the same direction as that of the first train at a speed of 60 kmph . when and at what distance from mumbai do the two trains meet ? 
Options: a ) 27 , b ) 279 , c ) 60 , d ) 278 , e ) 379
Output (English): c