First, we are going to calculate the total distance that Cody runs in a week as:
![(3)/(6)\cdot4=(3\cdot4)/(6)=(12)/(6)=2](https://img.qammunity.org/2023/formulas/mathematics/high-school/klj8air8ewyps7np7rnyjgmt3wsfuure7r.png)
Because he runs 4 times a week and every time runs 3/6 of a mile.
It means that he runs 2 miles a week
Now, we need to calculate how many times Arianna runs to cover 2 miles.
So, we need to divide 2 by 4/6 of a mile as:
![(2)/((4)/(6))=((2)/(1))/((4)/(6))=(2\cdot6)/(1\cdot4)=(12)/(4)=3](https://img.qammunity.org/2023/formulas/mathematics/high-school/jati950tnno30w5e38u752liy49y9g2ba4.png)
Therefore, she needs to run 3 times a week to cover 2 miles.
Answer: 3 times