Answer: 8.1 minutes per mile
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Work Shown:
40 minutes, 30 seconds = 40 + 30/60 = 40+0.5 = 40.5 minutes
She ran 5 miles in 40.5 minutes
This forms the ratio
5 miles : 40.5 minutes
Divide both sides by 5 to turn "5 miles" into "1 mile" and we get
5/5 miles : 40.5/5 minutes
1 mile : 8.1 minutes
Her minute per mile pace is 8.1 minutes per mile
This means it takes 8.1 minutes to run each mile.