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1. |
Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train?9 |
A. | 23 2 m |
B. | 23 m |
C. | 29 m |
D. | 27 7 m 9 |
Answer» E. | |