Part II (11 points in total)
A group of college students won a record Powerball jackpot of $423 million. The group had 2 choices:
A) Receive 30 beginning of the year payments of 14.1 million each
B) Receive a lump sum payment today of $211.5 million immediately
Kate and ken
PV(Present Value)=478000,n=number of years=5,r=interest rate=2.5%,FV(Future Value)=?
FV=PV(1+r^n)
=478000(1+0.025)^5
478000*1.131
540813.1257
Terry
n=20,Fv=1mn=1000000,r=3.6%,PV=?
Pv=FV/(1+r^n)
1000000/(1.036^20)
=$4,92,950.80351
r=7.5%
PV=1000000/(1.075^20)
=$235413.21
Today 3400, 8000 in 10 years and 20000 in 20 years , r=0.09
PV=8000?(1.09^10)
3379.2
PV=20000/(1.09^20)
3568.6
hence 20000 in 20 years, has to be selected as its value today is 3568.6.
Wilson
PV=12500,n=5,FV=16450,r=?
FV=PV(1+r^n)
16450=12500(1+r)^5
1.36=(1+r)^5
5th root of 1.36=1+r
5.831=1+r
r=4.831
Interest loan he is paying is 4.8%
T-Town
Fv=258000,Pv=132500,n=20,r=?
258000=132500(1+r^20)
1.947=(1+r^20)
20th root of 1.947=1+r
27.91=1+r
r=26.91%.
Fv greater than 100
Fv1=PV(1+r^n)
=50(1+0.1^8)
$107.18
Fv2=75(1+0.12)^3
$105.37
Fv3=90(1+0.14)^1
$102.6 So all three value is greater than $100.
Tom marry Sarah
Pv=Fv(1+r)^n
175640/250000=1.054^n
0.70256=1.054^n
n log(1.054)=log(0.70256)
n=6.7 years.
Doubling Period
r=8.75%,FV=2PV
PV=2PV(1+0.0875)^n
0.5=1.0875^n
log(0.5)/log(1.0875)=n
n=8.26years.
Sunny and Emily
n=18,r=4.2%,A=3000
Present value of annuity problem.
PV=A[(1-(1+r)^-n)/r]
3000[1-(1+0.042)^-18/0.042]
3000[1-0.47685/0.042]
=$37,367
Patman Dealership
A=3940,r=0.05,n=6,
Present value of annuity due formula since its at the beginning
p[1-(1+r)^-n/r](1+r)
3940[1-(1+0.05)^-6/0.05]/(1+0.05)
3940[1-0.7462/0.05](1.05)
=3940*5.076*1.05
=$20999.412
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