Task: Question Answering
Input (English): Problem: two goods trains each 500 m long are running in opposite directions on parallel tracks. their speeds are 30 km / hr and 90 km / hr respectively. find the time taken by the slower train to pass the driver of the faster one ?
Options: a. 48, b. 30, c. 26, d. 23, e. 12
Output (English): b