Discussion Forum
Que.  Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is: 
a.  1 : 3 
b.  3 : 2 
c.  3 : 4 
d.  None of these 
Correct Answer:3 : 2
