Task: Question Answering
Input (English): Problem: two trains running in opposite directions cross a man standing on the platform in 37 seconds and 27 seconds respectively and they cross each other in 29 seconds. the ratio of their speeds is :
Options: a. 3: 1, b. 3: 2, c. 3: 8, d. 3: 25, e. 1: 4
Output (English): e