 <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) <yor> Níwọ̀n bó ti jẹ́ pé a gbé ọ̀rọ̀ yìí yẹ̀ wò, tá a sì rí ìdáhùn sí i, ìbéèrè wo ló wá jẹ yọ? Iyara tó wà ní ìsàlẹ̀ odò = d/t = 75/(2 1/2) = 28 kmph Iyara ti o wa ni oke = d/t = 45/(2 1/2) = 18 kmph Iyara ti odò = (28 - 18)/2 = 5 kmph Ìdáhùn: (C) 