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Boats and Streams - Data Intensity 1 :: Discussion
| 11. | A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water? | |
| A. | 15 kmph | |
| B. | 10 kmph | |
| C. | 12 kmph | |
| D. | 12.5 kmph | |
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