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| Q.19 | A boat running downstream covers a distance of 18 kilometres in 2 hours. The same boat running upstream covers it in 4 hours. The speed (in kilometres per hour) of the boat in still water is | |
| Ans | 1. 6.5 | |
| 2. 6 | ||
| 3. 6.75 | ||
| 4. 6.25 |
Correct Ans Provided: 3
