divide 300 by 85 which is equal to 3.529…. meaning in 3 hours and something minutes, 300 miles will be reached. So, when we multiply 3 by 85 we will travel 255 miles meaning we have 45 miles togo. We now divide these 45 miles into 60 which is equivalent to the minutes in one hour and we get 3/4 of an hour. In total, it will take 3 hours and 3/4 of an hour (or 45 minutes) to travel 300 miles