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1. |
Two rains 100 metres and 120 mettres long are running in the same direction with speed of 72 km/hr and 54 km/hr . In how much time will the first train cross the second ? |
A. | 42 sec |
B. | 43 sec. |
C. | 44 sec |
D. | 45 sec |
Answer» D. 45 sec | |