Question 1205635
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In the hour that Aaron travels at 55mph before Mike starts driving, he travels 55 miles.<br>
The rate at which Mike catches up to Aaron is the difference of their speeds, which is 70-55 = 15mph.<br>
The number of hours it takes Mike to catch up to Aaron is 55/15 = 11/3 hours.<br>
ANSWER: 11/3 hours, or 3 2/3 hours, or 3 hours 40 minutes<br>