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. Find the ratio of their speeds?
A3 : 2
B4 : 1
C6 : 5
D8 : 3
A3 : 2
B4 : 1
C6 : 5
D8 : 3
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