Mr. Smith is purchasing a $ 90000 house. The down payment is 20 % of the price of the house.
He is given the choice of two mortgages:
a) a 30-year mortgage at a rate of 10 %.
Find
(i) the monthly payment: $
(ii) the total amount of interest paid: $

b) a 15-year mortgage at a rate of 10 %.
Find
(i) The monthly payment: $


(ii) the total amount of interest paid: $