 <translate> Ọsọ ụgbọ mmiri ahụ na mmiri na-adịghị agba = (60+80) / 2 = 70 kmph. Ọsọ nke iyi = (80-60) / 2 = 10 kmph Azịza ikpeazụ: (A). <hau> Gudun jirgin ruwa a cikin ruwa mai zaman kanta = (60 + 80) / 2 = 70 kmph. Saurin rafin = (80-60) / 2 = 10 kmph Amsar karshe: (A). 