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1. |
In one hour, a boat goes 11km/hr. along the stream and 5 km/hr. against the stream. The speed of the boat in still water (in km/hr.) is: |
A. | 3 km/hr. |
B. | 5 km/hr. |
C. | 8 km/hr. |
D. | 8 km/hr. |
Answer» D. 8 km/hr. | |