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| 1. |
Two stations P and Q are 570 km apart on a straight line. One train starts from P at 5 a.m. and travels towards Q at 90 km/h. Another train starts from Q at 6 a.m. and travels towards P at a speed of 70 km/h.. At what time will they meet? |
| A. | 11 a.m. |
| B. | 9 a.m. |
| C. | 1 p.m. |
| D. | 3 p.m. |
| Answer» C. 1 p.m. | |