Answer:
The best option would be the third as it the equivalent of 316,137 dollars today
Explanation:
We calcualte the present value of the alternatives and determinate the best for Jhon (the most expensive for the company)
Option 1: 186,000
Option 2: present value of an annuity-due:
[tex]C \times \frac{1-(1+r)^{-time} }{rate}(1+r) = PV\\[/tex]
C 23,000.00
time 12
rate 0.07
[tex]23000 \times \frac{1-(1+0.07)^{-12} }{0.07}(1+0.07) = PV\\[/tex]
PV $195,469.5098
Option 3: present value of an annuity-due:
[tex]C \times \frac{1-(1+r)^{-time} }{rate}(1+r) = PV\\[/tex]
C 59,000.00
time 10
rate 0.07
[tex]59000 \times \frac{1-(1+0.07)^{-10} }{0.07}(1+0.07) = PV\\[/tex]
PV $443,398.7027
As this beging at age 60 we should discount this amount 5 years:
[tex]\frac{AnnuityPV}{(1 + rate)^{time} } = PV[/tex]
Maturity $443,398.7027
time 5.00
rate 0.07000
[tex]\frac{443398.702679075}{(1 + 0.07)^{5} } = PV[/tex]
PV 316,137.1470