Calculate the time it takes to travel a certain distance in miles based on a speed of miles per hour.
time = distance ÷ speed
one mile (mi) = 1.609344 kilometres (km) one mile per hour (mi/hr) = 1.609344 kilometres per hour (km/hr)
How long will it take to travel 120 miles at a speed of 45 miles per hour?
Divide the distance of 120 miles by the speed of 45 miles per hour to get the time in hours;
120 ÷ 45 = 2.666667
It will take 2.667 hours to travel the 120 miles at a speed of 45 miles per hour. 2 hr - 40 min - 0 sec