Solution:-
(a)
Calculate the amount that home owners pay in annual mortgage
interest -
Annual
mortgage interest amount = 5% * 10 trillion
                                                    Â
= 0.05 * 7 trillion
                                                    Â
= 500 billion
(b)
Calculate the amount that
home owners pay in annual mortgage interest -
Annual
mortgage interest amount declines = 2% * 10 trillion
                                                                   Â
= 0.03 * 7 trillion
                                                                   Â
= $200 billion
c)
Aggregate demand will increase