- Speed, Distance, and Time, Unit Conversions (Feet to inches, miles to feet, hours to seconds)Choice G
It is known that

$$ 1\ hour=60\ minutes $$ It is given that Katerina runs 15 miles in $2\frac{1}{2}$ hours, thus she runs 1 mile in

$$ \frac{2\frac{1}{2}}{15} \ hours $$

To convert hours into minutes, we multiple by 60:

$$ \frac{2\frac{1}{2}}{15}\times60 =10\ minutes $$

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