Calculate the time it takes to travel a certain distance in miles based on a speed of kilometres per hour.
time = distance ÷ speed
one one mile (mi) = 1.609344 kilometres (km) one kilometre (km) = 0.621371192237334 miles (mi) one mile per hour (mi/hr) = 1.609344 kilometres per hour (km/hr)
How long will it take to drive 120 miles at a speed of 70 kilometres per hour?
First convert 120 miles to kilometres;
120 * 1.609344 = 193.12
120 miles equals 193.12 kilometres
Divide the distance of 193.12 kilometres by the speed of 70 kilometres per hour to get the time in hours;
193.12 ÷ 70 = 2.758875
It will take 2.758875 hours to travel the 120 miles at a speed of 70 kilometres per hour. 2 hr - 45 min - 32 sec