You can't convert a distance unit to a time unit. If this is for a speed problem, you would have to know the speed; in this case, use the formula: distance = speed x time.
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1 km = 1000 m so 380000 km = 380000 x 1000 m = 380,000,000 m
1 hour = 3600 seconds 1 mile = 1.609344 km 1609 mi/hr * 1.609344 km/mi ~= 2589.43 km/h 2589.43 km/h / 3600 seconds/hr ~= 0.71929 km/s
It is: Three hundred and eighty thousand
12 minutes = 720 seconds
1.5km per seconds