In: Finance
Rayna has saved $76,900.00. If she decides to withdraw $3,304.00 at the beginning of every six months and interest is 4.97 % compounded monthly comma for how long can she make withdrawals? Express your answer in years and months (from 0 to 11 months).
Rayna has saved amount today = $76,900
Periodic withdrwal at the beginning of every six months = $3304
Interest rate = 4.97% compounded monthly
Calculating 6 monthly interest from monthly compounding:-
where, r = Interest rate = 4.97%
m = no of times compounding = 12
= 2.5109%
Now, Calculating the no of withdrawals can be made using Present Value of Annuity due formula:-
Where, C= Periodic Withdrawal = $3304
r = Periodic Interest rate = 2.5109%
n= no of periods
Present Value = $76,900
Taking Log on Both sides,
Log(0.42990704867) = -n*Log(1.025109)
-0.3666254342 = -n*0.0107700464
n = 34.04 periods
So, the time she can make withdrawal = 34.04/2 = 17.02years (as semi-annual withdrawal dividending the no of periods by 2)
Hence, 17 years