b) How much would be in the account on his 65th birthday if he had started the deposits on his 30th birthday and continued making deposits on each birthday until (and including) his 65th birthday? 5. A person purchased a house 10 years ago for $160,000. The house was financed by paying 20% down and signing a 30-year mortgage at 7.75% on the unpaid balance with payments made monthly. a) What is the unpaid balance after the 120th payment? b) After the 120th payment, the owner wishes to refinance the house due to a need for additional cash. If the loan company agrees to a new 30-year mortgage of 80% of the new appraised value of the house, which is $225,000, how much cash will the owner receive after repaying the balance of the original mortgage? Acorporation wants to lease a fleet of 12 airplanes with a combined carrying capacity of