 
 <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). <yor> Iyara tó wà ní ìsàlẹ̀ odò = d/t = 84/(2) = 42 kmph Iyara ti o wa ni oke = d/t = 48/(2) = 24 kmph Ìyára tí ìsun omi ń yára yára = (42 - 24) / 2 = 9 kmph Nítorí náà ìdáhùn tí ó kẹ́yìn ni (C). 