There is no sensible answer to this question. A kilometre is a measure of distance, with dimensions [L]. An hour is a measure of time, with dimensions [T]. Basic dimensional analysis teaches that you cannot convert between measures with different dimensions without additional information. The time taken to cover a distance of 80 km will be different if you are walking as opposed to flying in a plane.
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To determine the time it takes to drive 260 km at 80 km per hour, you can use the formula: time = distance / speed. In this case, time = 260 km / 80 km/h = 3.25 hours. Therefore, it would take 3.25 hours to drive 260 km at a speed of 80 km per hour.
If 1 hour ===> 40 km, then 2 hours ===> 80 km.
would depend on which speed you where travelling 60 miles / hour 1000 divided by 60 = 16.7 hours 70 miles / hour 1000 divided by 70 = 14.3 hours 80 miles / hour 1000 divided by 80 = 12.5 hours 90 miles / hour 1000 divided by 90 = 11.1 hours 100 miles / hour 1000 divided by 100 = 10.0 hours 50 km / hour 1000 divided by 50 km = 20.0 hours 60 km / hour 1000 divided by 60 km = 16.7 hours 70 km / hour 1000 divided by 70 km = 14.3 hours 80 km / hour 1000 divided by 80 km = 12.5 hours 90 km / hour 1000 divided by 90 km = 11.1 hours 100 km / hour 1000 divided by 100 km = 10.0 hours
4 hours 15 minutes = 4.25 hours. 4.25 hours @ 80 km per hour = 4.25*80 = 340 km.
336 km