Explanation:

- The boat’s downstream speed includes the stream’s speed: 22 km/h.

- Stream’s speed is: 1 km/h.

- Boat’s actual speed in still water: 22 - 1 = 21 km/h.

- Distance downstream:

- Speed: 22 km/h

- Time: 3 hours

- Distance = Speed × Time = 22 × 3 = 66 km

- Boat’s upstream speed:

- Boat’s speed: 21 km/h

- Stream subtracted, Speed = 21 - 1 = 20 km/h

- Distance upstream:

- Speed: 20 km/h

- Time: 2 hours

- Distance = Speed × Time = 20 × 2 = 40 km

- Total distance covered:

- Downstream + Upstream = 66 + 40 = 106 km

- Option 3: 106 km

- Correct answer is Option 3: 106 km

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