| Q.18 | The speed of a boat in still water is 15 km/hr. If the upstream speed of the boat is 10 km/hr, then what is the speed of the stream? | |
| Ans | 1. 2 km/hr | |
| 2. 3 km/hr | ||
| 3. 4 km/hr | ||
| 4. 5 km/hr |
Correct Ans Provided: 4
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