Task: Question Answering
Input (English): Problem: a train leaves delhi at 9 a . m . at a speed of 30 kmph . another train leaves at 2 p . m . at a speed of 40 kmph on the same day and in the same direction . how far from delhi , will the two trains meet ? 
Options: a ) 900 km , b ) 800 km , c ) 600 km , d ) 690 km , e ) 609 km
Output (English): c