Delta Dawn’s Bakery is considering purchasing a new van to deliver bread. The van will cost $18,000. Two-thirds ($12,000) of this cost will be borrowed. The loan is to be repaid with four equal annual payments (first payment at t = 1) based on an interest rate of 4%/year. It is anticipated that the van will be used for 6 years and then sold for a salvage value of $2,500. Annual operating and maintenance expenses for the van over the 6-year life are estimated to be $700 per year. If the van is purchased, Delta will realize a cost savings of $3,600 per year. Delta uses a MARR of 6%/year.
What is the present worth of the van?
Working notes:
(A) Loan repayment, years 1 to 4 = Loan amount / PVIFA(4%, 4) = 12,000 / 3.6299 = 3,305.88
(B) Annual net benefit (NB) ($) = Annual savings - Annual cost - Annual loan repayment
(C) NB in year 6 = Annual savings - Annual cost + $2,500 (Salvage value)
(D) First cost = $18,000 - $12,000 = $6,000
(E) PV Factor in year N = 1 / (1.06)N
Therefore, Present Worth (PW) of NB is computed as follows.
Year | Savings ($) | Cost ($) | Loan Repaid ($) | NB ($) | PV factor @6% | Discounted NB ($) |
(1) | (2) | (3) | (4)=(1)-(2)-(3) | (5) | (4)x(5) | |
0 | 6,000 | -6,000 | 1.0000 | -6,000 | ||
1 | 3,600 | 700 | 3,305.88 | -406 | 0.9434 | -383 |
2 | 3,600 | 700 | 3,305.88 | -406 | 0.8900 | -361 |
3 | 3,600 | 700 | 3,305.88 | -406 | 0.8396 | -341 |
4 | 3,600 | 700 | 3,305.88 | -406 | 0.7921 | -321 |
5 | 3,600 | 700 | 0 | 2,900 | 0.7473 | 2,167 |
6 | 3,600 | 700 | 0 | 5,400 | 0.7050 | 3,807 |
PW ($) = | -1,433 |
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