3 hours
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It takes (68 hours) divided by (the speed you travel, in miles per hour).
At 88 miles per hour it takes 1 hour
23.57 hours
Four and a half hours !
Light travels at a speed of approximately 186,282 miles per second in a vacuum. To calculate the time it takes for light to travel 100 miles, you can use the formula: time = distance/speed. Thus, it takes light about 0.000536 seconds, or 536 microseconds, to travel 100 miles.