If you need to drive from Dallas, Texas, to Salt Lake City, Utah, (about 1500 miles), and the speed limit is 60 mph most of the way, what is the least amount of time you will need?

25 hours

Explanation:

Speed is a measure of the distance traveled by a body relative to the time taken to complete a trip or a journey. Mathematically, speed can be expressed as;

      speed = distance/time

Hence, time = distance/speed

The distance covering Dallas, Texas, to Salt Lake City, Utah is about 1500 miles and the speed limit is 60 mph, hence;

time = 1500/60

           = 25 hours

Therefore, the least amount of time that would be needed to cover the journey is 25 hours.

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explanation:

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