1.

A sailor sails a distance of 48 km along the flow of a river in 8 h. If it takes 12 h to return the same distance, then the speed of the flow of the river is

A. 1 km/h
B. 2 km/h
C. 0.5 km/h
D. 1.5 km/h
Answer» B. 2 km/h


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