 
<translate> Da farko zamu canza lokacin awa 4 da minti 20 cikin mintuna 2 hours da minti 20 = 2 × 60 + 20 = 140 minutes. Matsakaicin saurin S an ba shi ta nesa / lokaci. Saboda haka S = 280 mil / 140 minti = 2 mil / minti. Akwai mintuna 60 a cikin awa daya don haka saurin shine 2 * 60 = 120 mil / awa. <eng> We first convert the time of 4 hours 20 minutes in minutes 2 hours 20 minutes = 2 × 60 + 20 = 140 minutes. Average speed S is given by distance / time. Hence S = 280 miles / 140 minutes = 2 mile / minute. There are 60 minutes in an hour so the speed is 2 * 60 = 120 miles / hour. 