Answer:
old lathe should not be replaced now
Step-by-step explanation:
Using MARR of 12%
Price decline of 2000 per year ; salvage value = (present market value - does cline per year)
Present market value of old lathe = $16000
Opening market value at year end = (16000 * 1.12) = 17920
Add: Maintainace plus operating cost = $4200 / year
Salvage value = 16000 - 2000 = 14000
Annual cost : (Opening market value + operating cost - salvage value)
Annual cost :
Year 1 = (17920 + 4200 - 14000) = 8120
Year 2:
Opening market value at year end = (14000 * 1.12) = 15680
Salvage value = (14000 - 2000) = 12000
Annual cost :
Year 1 = (15680 + 4200 - 12000) = 7880
Year 3:
Opening market value at year end = (12000 * 1.12) = 13440
Salvage value = (12000 - 2000) = 10000
Annual cost :
Year 1 = (13440 + 4200 - 10000) = 7640
Year 4:
Opening market value at year end = (10000 * 1.12) = 11200
Salvage value = (10000 - 2000) = 8000
Annual cost :
Year 1 = (11200 + 4200 - 8000) = 7400
New machine :
Opening market value of year end = (45000 * 1.12) = 50,400
Add : Maintenance plus Operating expense = $1600
Salvage value = 45000 * 0.7 = 31500
Annual cost :
50400 + 1600 - 31500
= 20500
New machine has a far greater annual cost thb the old, hence the old machine should still be used for now.