The Grewals agreed to monthly payments on a mortgage of
$336,000.00 amortized over 20 years. Interest for the first five
years was 4.5% compounded semi-annually.
a. Determine the Grewals’ monthly payments.
b. Determine the balance owing after the 5-year term.
c. Before renewing for another term of 5 years at 4.3%
compounded semiannually, the Grewals make an additional payment of
$12,000. If they keep the same monthly payments, by how much will
the amortization period be shortened?