(3) Quang accumulates a fund by depositing $20,000 in a savings account that credits interest at a nominal discount rate of 4.8% per year compounded quarterly. He leaves his money in this account to accumulate for 12 years, then moves it to a new account that is accumulating at 5.4% per year compounded continuously. At the time he moves his money to the new account he starts withdrawing it continuously at the rate of $8,000 per year. How many years will his money last after he starts withdrawing it from the new account? (Ans 5.10632 years)