Task: Question Answering
Input (English): Problem: the distance between a & b is 1540 km . a person is traveling from a to b at 100 km / hr started at 6 am and another person is traveling from b to a at 120 km / hr and started at same time . then at what time they meet together . 
Options: a ) 11 am , b ) 1 pm , c ) 3 pm , d ) 10 am , e ) 9 am
Output (English): b