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| 1. |
A boatman can row his boat at a speed of 8 km per hour in still water. If a river flows at a speed of 2 km per hour, then how long will the boatman take to row his boat 1200 meters with the direction of the current? |
| A. | 7.2 minutes |
| B. | 7.4 minutes |
| C. | 7.6 minutes |
| D. | 7.8 minutes |
| Answer» C. 7.6 minutes | |