First we need to calculate the monthly discount rate for the lease arrangement (EAR):
EAR = (1 + APR / k)^k - 1
= (1 + .06 / 4)^4 – 1
= .06136 or 6 .14%
Monthly rate = (1 + EAR)^(1/12) – 1
= (1.06136)^(1/12) - 1
= .004975 = 0.4975%
Now we can apply the formula for the PV of a constant annuity:
I = .4975
N = 60 = (5 years × 12 months/yr)
FV = 0
PMT = $4000 (lease payment)
Compute PV = 207,051.61
Answer: Therefore you should purchase the new delivery truck.