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| Q.19 | A boat is moving in still water at a speed of 15 km/h. The speed of the stream is 3 km/h. How much time will the boat take to cover 6 km upstream? | |
| Ans | 1. 30 minutes | |
| 2. 45 minutes | ||
| 3. 15 minutes | ||
| 4. 20 minutes |
Correct Ans Provided: 1
