 
<translate> Saurin saukar da ruwa = d/t = 84/(2) = 42 kmph Saurin hawan sama = d/t = 48/(2) = 24 kmph Saurin rafin = (42 - 24) / 2 = 9 km / h Don haka amsar karshe ita ce (C). <eng> Speed downstream = d/t = 84/(2) = 42 kmph
Speed upstream = d/t = 48/(2) = 24 kmph
The speed of the stream = (42 - 24)/2 = 9 kmph So the final answer is (C). 