Question:
A boat takes 4 hours to travel 40 km downstream and 6 hours to return. The speed of the stream is:
A boat takes 4 hours to travel 40 km downstream and 6 hours to return. The speed of the stream is:
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Stream speed = half of speed difference.
Updated On: Jan 5, 2026
- 2 km/h
- 4 km/h
- 6 km/h
- 8 km/h
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The Correct Option is A
Solution and Explanation
Downstream speed = 10 km/h, upstream = 6.67 km/h
\[
\text{Stream speed}=\frac{10-6.67}{2}=2\ \text{km/h}
\]
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