If I understand the question right I would believe it to be 5 miles an hour because the course is a mile and he ran a mile in 12 minutes. We know an hour is 60 minutes so we have to divide the number of minutes he is talking from the hour. 60 divided by 12 is 5 so if he is running a mile every 12 minutes then he is running 5mph
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The teenage son had a very messy room that hadn't been cleaned in ages.
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The eukaryotic cell is more complex, therefore, it requires more time to complete any mechanism related to reproduction compared to the prokaryotic cell.
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The building's unique design surprised us.