A. 1 : 3
B. 3 : 2
C. 3 : 4
D. 3 : 1
Let the speeds of the two trains be a m/sec and b m/sec respectively.
Then, length of the first train = 27a metres,
and length of the second train = 17b metres
=> (27a + 17b) / (a + b) = 23
=> a/b = 3/2
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