Dealing with two circuits connected by adjacent inductors

[D Nguyen]

Homework Statement

Here is the problem:

Homework Equations

Typical RL circuit equations.

The Attempt at a Solution

My main question with this problem is figuring out what to do with the third resistor, the one on the right. Initially, I thought of using RL circuit equations with the left circuit, but I don't know how to adjust that solution for the rightmost resistor. Please help me move past this step, thank you!

 

[berkeman]

Homework Statement

Here is the problem:
View attachment 194710

Homework Equations

Typical RL circuit equations.

The Attempt at a Solution

My main question with this problem is figuring out what to do with the third resistor, the one on the right. Initially, I thought of using RL circuit equations with the left circuit, but I don't know how to adjust that solution for the rightmost resistor. Please help me move past this step, thank you!

Is the coupling coefficient between the two inductors given or inferred somehow? You need to know the coupling coefficient in order to solve this problem, IMO.

https://en.wikipedia.org/wiki/Inductive_coupling