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1. |
A boat takes 80 minutes to row 12 km upstream and 60 minutes to row 15 km downstream. How long will it take to row a distance of 36 km in still water? |
A. | 4 hours |
B. | 2.5 hours |
C. | 3 hours |
D. | 2 hours |
Answer» D. 2 hours | |