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You just drove 280 miles and it took you approximately 5 hours. How many miles per hour was your average speed?

A about 56 miles per hour
Explaination
Use the formula for distance, speed and time: distance = speed \u00D7 time or d=s \u00D7 t Solve for s: $4934_w44_h38.png$ $9112_w242_h39.png$ Note: Since the wording in the question lists the time traveled as "approximately 5 hours", we use the word "about" in all of the answer choices. The question, however, asks for the "miles per hour," not the "approximate" miles per hour, so none of the other answers would be correct.
B about 55 miles per hour
C about 58 miles per hour
D about 60 miles per hour