Civil Services 2020_Qn C64, A man takes half time in rowing a certain distance downstream than .....

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A man takes half time in rowing a certain distance downstream than upstream. What is the ratio of the speed in still water to the speed of current?
(a) 1 : 2
(b) 2 : 1
(c) 1 : 3
(d) 3 : 1
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