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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. | |