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This is a distance, rate, and time problem, so we can use the equation d=r/t where d is the distance, r is the rate, and t is the time. The equation states that the distance an object travels is equal to its rate (the speed; in this case, 80 miles per hour) divided by the time. If we want to find the time from this, we need to use algebra to solve for t. Doing so will yield the equation t=r/d using the simple process of cross multiplication. All you have to do now is use your values for the distance and speed and you have your answer (which will be 7.5 hours if you have to write the time in terms of hours).

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13y ago
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Q: How long will it take to drive 300 miles going 80 miles per hour?
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