1.

A boatman can take the same time to row6.5km downstream and 3.5km upstream. Hisspeed in still water 2.5 km/hr. The speed of the stream is:

A. 0.75km/hr
B. 2.5km/hr
C. 1.5km/hr
D. 7.5km/hr
Answer» B. 2.5km/hr


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