Question Details

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A man can row 30 km downstream in 3 hours and upstream in 5 hours. What is the speed of the stream?

A. 2 km/h
B. 3 km/h
C. 4 km/h
D. 5 km/h

Explanation:

Explanation: Downstream speed = 30/3 = 10 km/h, upstream speed = 30/5 = 6 km/h. Speed of stream = (10-6)/2 = 2 km/h.