Answer:
if Luke has ran 3.5 miles in January, he ran 3.5 miles in January.
but if you mean he ran 3.5 every day in January, he ran 108.5 miles in January.
Explanation:
if you get the amount of days in January, that is 31.
so now get the amount of miles he ran (3.5) and the amount of days in January(31) and divide them. 3.5 divided by 31 = 108.5 miles
~~~108 miles~~~