Mr. Smith is purchasing a $ 190000 house. The down payment is 20 % of the price of the house. He is given the choice of two mortgages: a) a 20-year mortgage at a rate of 6% compounded monthly. Find (i) the monthly payment: $ (ii) the total amount of interest paid: $ b) a 15-year mortgage at a rate of 6% compounded monthly. Find (i) The monthly payment: $ (ii) the total amount of interest paid: $