Solution:
Total amount that has to be paid after 30 years = $305,000 with a 30-year 5/1 ARM at 4.65% with a 1/12 cap structure.
As, amount will depreciate after each year.
Amount left after 6 years which is to be paid=
![Amount = Principal * [1-(rate)/(100)]^(time)\\\\A= 305,000* [1-(4.65)/(100)]^(6)\\\\ A=305,000* [(95.35)/(100)]^(6)\\\\ A=305,000* [0.9535]^(6)\\\\ A=229204.966](https://img.qammunity.org/2019/formulas/mathematics/high-school/g65lpdvymcuu6l3nwv4x25cysa1al5765i.png)
Amount Paid after 6 years = $ 305,000.00 - $ 229204.966
=$ 75795.034
Amount left, after 5 years which is to be paid=
![Amount = Principal * [1-(rate)/(100)]^(time)\\\\A= 305,000* [1-(4.65)/(100)]^(5)\\\\ A=305,000* [(95.35)/(100)]^(5)\\\\ A=305,000* [0.9535]^(5)\\\\ A=240382.76](https://img.qammunity.org/2019/formulas/mathematics/high-school/ojubkro6op51yyvlslnmsayl87qr8cgd25.png)
Amount paid after 5 years= $ 305,000.00 - $ 240382.76
=$ 64617.24
Total amount that has to be paid between 5 to 6 years= $ 75795.034 - $ 64617.24=$ 11177.794
Monthly payment=

So, monthly payment at the beginning of year 6= $ 931.48