Task: Question Answering
Input (English): Problem: how much time will a train of length 400 m moving at a speed of 72 kmph take to cross another train of length 300 m, moving at 36 kmph in the same direction ?
Options: a. 40 sec, b. 50 sec, c. 60 sec, d. 70 sec, e. 80 sec
Output (English): d