3 things to keep 1: It takes a garage owner 45 minutes to travel between his two garages 60 miles apart. Travelling at the same speed, how long would it take him to travel to his home 25 miles away? here it is 45/60 not 60/45 so minutes on top of miles 2: A jet travels 320 km in 20 minutes. How far will it fly in 30 minutes? here minutes is bottom, so 320/20 3: A boy cycles 20km in 140 minutes. How long would it take him to cycle 8km, at the same speed? km is bottom and minutes is on top, so 140/20 why is does it exactly does it keep changing what's on top? Is miles the only one allowed to have the smaller number on top, meanwhile km or under has to have the highest number first?