Bre ran 2 1/2 miles in 2/5 of an hour.
How long would it take Bre to run 1 mile at that rate?
It would take Bre________ of an hour to run 1 mile.
2 1/2 miles in 2/5 of an hour
1 mile at that rate = 2/5 ÷ 2 1/2 hours
= 0.4 ÷ 2.5 hours = .16 hours
or 9.6 minutes
or
sticking totally with fractions:
2/5 ÷ 5/2
= (2/5)(2/5)
= 4/25 hours