Simple. one sixth of an hour is 10 minutes. so she can run half a mile in 10 minutes. by doing simple multiplication, you can tell she can run <u>3</u><u> </u><u>miles</u> exact in one hour if she was to keep that pace the whole time. The rate or speed eould be <u>3</u><u> </u><u>miles</u><u> </u><u>per</u><u> </u><u>hour</u><u>,</u> also written as <u>3mph</u><u>.</u>