1.

 The speeds of two trains are ratio 2 : 3 . They are going in opposite directions along a parallel line. The first train takes 10 sec & the second train takes 5 sec to cross a pole. What is the time th

A. 7 sec.
B. 9 sec.
C. 11 sec.
D. 15 sec.
Answer» B. 9 sec.


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