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25 miles per hour = 25 miles per (60 minutes/hour)*1 hour = 25 miles per (60 seconds/minute)(60 minutes/hour)*1 hour = (5280 feet/mile)*25 mile = (60 seconds/minute)(60 minutes/hour)*1 hour.
All of that reduces to 132,000 feet/3600 seconds which equals 36.66667 feet per second.
Since we know that he was traveling 36.666667 feet/second but want to know how much he traveled in one second we cross multiply the fractions to get 36.6666667x = 10. Solving for x by dividing 36.66666667 into 10 you get the final answer of 0.27272727....
However, since the initial word problem only provide 2 significant digits
the answer must be limited to 0.27
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