Task: Question Answering
Input (English): Problem: two stations p and q are 200 km apart on a straight track . one train starts from p at 7 a . m . and travels towards q at 20 kmph . another train starts from q at 8 a . m . and travels towards p at a speed of 25 kmph . at what time will they meet ? 
Options: a ) 10 am , b ) 12 noon , c ) 10.30 am , d ) 12.30 am , e ) 11 am
Output (English): b