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- Identify upstream or downstream.
- Apply the correct effective speed.
- Use distance/time relation.
Correct Answer: B
Correct Answer: B
Method / Topic: Boats and Streams
The answer uses the correct effective speed of the boat.
Short Explanation
Detailed Explanation
Correct Answer: B
Method / Topic: Boats and Streams
Upstream speed = speed in still water - stream speed = 15-3=12 km/h.
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Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Shortcut used, common trap, and the fastest solving route
- Identify upstream or downstream.
- Apply the correct effective speed.
- Use distance/time relation.
A boat moves at 15 km/h in still water and the stream speed is 3 km/h. What is its upstream speed?
Explanation
Correct Answer: B
Method / Topic: Boats and Streams
The answer uses the correct effective speed of the boat.
Short Explanation
Detailed Explanation
Correct Answer: B
Method / Topic: Boats and Streams
Upstream speed = speed in still water - stream speed = 15-3=12 km/h.
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