Task: Question Answering
Input (English): Problem: two trains of length 180 m and 280 m are running towards each other on parallel lines at 42 kmph and 30 kmph respectively. in what time will they be clear of each other from the moment they meet ?
Options: a. 22 sec, b. 23 sec, c. 76 sec, d. 20 sec, e. 66 sec
Output (English): b