In: Economics
A lottery claims its grand prize is $10 million,
payable over five years at $2 million per year. If the
first payment is made immediately, what is this grand prize really
worth? Use an interest rate of 6%.
r = 6%
Ai = lottery amount received in year i
i = year number
Using formula for Present Value
PVyeari = Ai / (1 + r)i : ; where i is from 1 to 4
PVyear0 = $2 million
PVyear1 = $2 / (1 + 0.06)1 = $2 / 1.06 = $1.89 million
PVyear2 = $2 / (1 + 0.06)2 = $2 / (1.06)2 = $2 / 1.1236 = $1.78 million
PVyear3 = $2 / (1 + 0.06)3 = $2 / (1.06)3 = $2 / 1.1910 = $1.68 million
PVyear4 = $2 / (1 + 0.06)4 = $2 / (1.06)4 = $2 / 1.2625 = $1.58 million
Present Worth PW = Σ PVyear i ; value of i from 0 to 4
= $2 + $1.89 + $1.78 + $1.68 + $1.58
= $8.93 million
The grand prize is really worth $8.93 million