 
 <translate> Given the following reasoning and answer, what was the question? Speed downstream = d/t = 75/(2 1/2) = 28 kmph
Speed upstream = d/t = 45/(2 1/2) = 18 kmph
The speed of the stream = (28 - 18)/2 = 5 kmph
 The answer: (C) <hau> Bisa ga tunani da amsar da ke gaba, menene tambayar? Saurin saukar da ruwa = d/t = 75/(2 1/2) = 28 kmph Saurin hawan sama = d/t = 45/(2 1/2) = 18 kmph Saurin rafin = (28 - 18) / 2 = 5 kmph Amsar ita ce: (C) 