An aircraft flying at an average speed of 770 km/h takes 15 hours to complete a journey. Find the time taken for the aircraft to complete at same journey if it's average speed is 660 km/h
We can solve it two ways, we´ll do it via physics: We know that: d=vt d=770km/h*15h d=11550km Now at 660km/h: t=d/v t=11550km/660km/h t=17,5h Math way: 770km/h→15h 660km/h→x So: (770*15)/660=x x=17,5h
