Mathematics
NULL
Medium
Question
A boat is rowed downstream at 15.5 km/h and upstream at 8.5 km/h. Find the speed of the stream.
A
3.5 km/hr
✓ Official correct answer
B
5.75 km/hr
C
6.5 km/hr
D
7 km/hr
Community credibility
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A
3.5 km/hr
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B
5.75 km/hr
No member explanations yet for this option.
C
6.5 km/hr
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D
7 km/hr
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Explanation
Stream speed = (15.5 − 8.5)/2 = 3.5 km/h.