I am taking my commercial written next week and I have basically hit a wall on the chapter dealing with ADF and HSI. I have been pondering over the answers and explanations on the Gleim but it makes little to no sense as I have used the ADF perhaps once in my PPL days, and my HSI experience is limited to x-plane only.

I understand the MH+RB = MB questions, however questions such as the following are very confusing.

1. MH = 35.
RB =310.

To intercept a magnetic bearing of 240 FROM at a 30 degree angle (while outbound) the airplane should be turned?

2. If the airplane continues to fly on the heading as shown, what magnetic bearing FROM the station would be interception at a 35 degree angle outbound?

Although I don't use an ADF and HSI, it would be great to understand how to come up with the solution. I am not at all a proponent of memorization. It just doesn't make any sense to me. Any help to shed light upon this subject is greatly appreciated.