James just won the Georgia State lottery prize of $30,000,000. he has decided to take a lump sum payment, even though taxes will reduce his prize by 45%. James feels safer with his money in a bank, where he will receive an annual return of 0.95%, and where he will have ready access to cash when he needs it. If he withdraws $100,000 at the end of each month, approximately how long will it be until his lottery winnings are exhausted?
14 years |
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15 years |
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13 years |
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16 years |
After tax winning = pre tax winning*(1-tax rate) = 30000000*(1-0.45) = 16500000
PVOrdinary Annuity = C*[(1-(1+i/(f*100))^(-n*f))/(i/(f*100))] |
C = Cash flow per period |
i = interest rate |
n = number of years I f = frequency of payment |
16500000= 100000*((1-(1+ 0.95/1200)^(-n*12))/(0.95/1200)) |
n(in years) = 14.74 = 15 years |
Using Calculator: press buttons "2ND"+"FV" then assign |
PV =-16500000 |
PMT =100000 |
I/Y =0.95/12 |
FV = 0 |
CPT N |
Number of years = N/12 |
Using Excel |
=NPER(rate,pmt,pv,fv,type)/no. of payments per year |
=NPER(0.95/(12*100),-100000,,16500000,)/12 |
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