Andrea and Stanley have decided on a $ 320 , 000 mortgage value for this new house. They are comparing two mortgage options from two different lending institutions. They know they want a 30 -year term, but they aren't sure which institution would be a better fit. Mortgage B institution is closer to their home, and they aren't sure the difference in monthly payment is worth partnering with someone farther away. Mortgage A: 4.5 % with monthly payments of $ 1 , 621.39 Mortgage B: 5 % with monthly payments of $ 1 , 717.83 How much is the total payback for each mortgage option