Shayna ran 6 miles in one week this was 1/3 of what she ran in a month write and solve a division equation to find how far she ran in a month

For this case we must find the number of miles that Shayna ran in a month.

We know he ran 6 miles in a week.

So, let "x" be the number of miles that Shayna ran in a week:

Let "y" be the number of miles that Shayna ran in a month, so if what she ran in a week was of what she ran in a month we have:

So, Shayna ran 18 miles in a month

18 miles