Answer: John Roberts should take the lump sum of $180 000
Explanation:
option 1
lump sum = $180 000
option 2
Present Value = P(1-(1+r)^-n)/r
Present Value = 16000(1-(1+0.07)^-20)/0.07
Present Value = 169504.22789 = 169504.23
The present value of option 2 = $169504
option 3
Present Value = P(1-(1+r)^-n)/r
Present Value = 50000(1-(1+0.07)^-10)/0.07
present value (at age 65) = 351179.07643
the annuity of option 3 will start in future when john is 65 years old. the present value of $ 35179.07643 is the present of the annuity at the age of 65. john is 55 years old,We need to discount the present value of $ 35179.07643 to determine how much is option 3 future annuity worth today.
Present value= 351179.07643
N = 65 - 55 =10
present value (at age 55) = (present value at 65)/(1+r)^n
present value (at age 55) = 351179.07643/(1+0.07)^10
present value (at age 55) = 178521.63491 = 178521.64