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A. 3.5km/hr
B. 5.75km/hr
C. 6.5km/hr
D. 7km/hr

Explanation:

Speed Downstream = 15.5 km/hr,
speed upstream = 8.5 km/hr
Speed of the stream = ½ (15.5 – 8.5)km = 3.5 km/hr

Correct Answer: 3.5km/hr

Last Updated: February 07, 2020