A man swimming in a river which is flowing at 3 1/2 km/ hr finds that in a given time he can swim twice as far downstream as he can swim upstream. What will be his speed in still water?
| Question | A man swimming in a river which is flowing at 3 1/2 km/ hr finds that in a given time he can swim twice as far downstream as he can swim upstream. What will be his speed in still water? | |
| Type | multiple_choice | |
| Option | 9.5 km/hr | incorrect |
| Option | 10 lm/hr | incorrect |
| Option | 10.5 km/hr | correct |
| Option | 11 km/hr | incorrect |