The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream in the same time, the speed of the stream is :
A. 2 km/hr
B. 2.5 km/hr
C. 3 km/hr
D. 4 km/hr
সঠিক উত্তরঃ
C.
3 km/hr
Explanation:
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