1.

A steamer goes downstream and covers the distance between two ports in 5 hours while it covers the same distance upstream in 6 hours. If the speed of the stream is 1 km/hr, find the speed of the steamer in still water.

A.  12 km/hr        
B.         11 km/hr        
C.         13 km/hr        
D.         14 km/hr
Answer» C.         13 km/hr        


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