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1. |
A train with 90 km/hr crosses a bridge in 36 seconds. Another train 100 m shorter crosses the same bridge at 45 km/hr. Find the time taken by the second train to cross the bridge ? |
A. | 64 sec |
B. | 60 sec |
C. | 72 sec |
D. | 1 hr |
Answer» B. 60 sec | |