In this question , it is given that
your pace on a treadmill is 40.0 meters per minute.
In means 40 meters are travelled in one minute .
And 1 meter equals to 3.28 feet .
So 3.28*40 feet are travelled in one minute, that is
131.2 feets are travelled in 1 minute.
Therefore, 7220 feet are travelled in
[tex] = \frac{7220}{131.2} minutes = 55 minutes [/tex]