(1 point) Mr. Smith is purchasing a $150000 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: $