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- Identify upstream or downstream.
- Apply the correct effective speed.
- Use distance/time relation.
Correct Answer: D
Correct Answer: D
Method / Topic: Boats and Streams
The answer uses the correct effective speed of the boat.
Short Explanation
Detailed Explanation
Correct Answer: D
Method / Topic: Boats and Streams
The stream speed is the difference between the still-water speed and upstream speed: 18-14=4 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 18 km/h in still water and 14 km/h upstream. What is the speed of the stream?
Explanation
Correct Answer: D
Method / Topic: Boats and Streams
The answer uses the correct effective speed of the boat.
Short Explanation
Detailed Explanation
Correct Answer: D
Method / Topic: Boats and Streams
The stream speed is the difference between the still-water speed and upstream speed: 18-14=4 km/h.
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