Answer :

Final answer:

The period, in this context, refers to the time it takes to complete a single lap. It is calculated by dividing the time taken to complete all laps by the number of laps, giving a result of 70 seconds per lap.

Explanation:

In the context of this problem, the term period refers to the time taken by the runner to complete one full trip around the track. Since the runner takes 420 seconds to complete 6 laps, we need to divide this total time by the number of laps to calculate the time it takes to complete just one lap, which we are calling the period.

Using this method, we find the period = 420 seconds/6 laps = 70 seconds/lap. This means that it takes the runner 70 seconds to complete one lap around the track.

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