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| 1. |
A goods train leaves a station at a certain time and at a fixed speed. After 6 hours, an express train leaves the same station and moves in the same direction at a uniform speed of 90 km/h. This train catches up the goods train in 4 hours. Find the speed of the goods train. |
| A. | 29 km/h |
| B. | 32 km/h |
| C. | 36 km/h |
| D. | 41 km/h |
| Answer» D. 41 km/h | |