A young family take a $220,000 mortgage at /span>()") = 5.4%. They plan to

amortize the loan with level monthly payments over 25 years.

a) Find their monthly payment.

b) Find the outstanding balance at the end of 6 years.

c) Immediately after their 72nd payment, the family increases their monthly

payment by 10% Find the principal repaid in their 73rd payment.

d) If they keep their monthly payments at the newer amount, when do they

expect to repay the mortgage?

Actuarial Science need steps, thanks!