6 min, 43 s = 403 s
In the case of 4 laps around a track for a full mile, then
(403 s / 4 laps) = 100.75 s/lap =
(100.75 s/lap)(1 min/60s) = 1.68 min/lap
(0.68 min)(60s/min) = 40.8 s
So it would be 1 min and 40.8 seconds per lap.
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