1 . Two trains of the same length running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively andhey cross each other in 23 seconds. What is the ratio of their speeds?
- A. 1 : 2
- B. 1 : 3
- C. 3 : 2
- D. 5 : 8
- D. None of these
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