15 mph
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She can run 3.75 miles in 15 minutes.
Running a mile in exactly 4 minutes equates to a speed of 15 MPH.
quarter mile track= 400 meters To be technically a mile is 1609 meters, be to make this a bit easier round it down to 1600 meters, So 4 laps to a mile, 9x4=36 + 2 for the half mile = 38 laps if you really want to make sure its the full 9.5, add on another 100 meter stretch, either the turn or striaght away and youll be a bit over but good
3/4
4 hours 2 minutes.