Alternative 1 has a first cost of $50,000, will produce an $18,000 net annual benefit over its 10 year life and be salvaged for $5,000. Alternative 2 costs $150,000 and has a salvage value of $50,000 after its 10 year useful life. If interest is 15%, what is the minimum amount of annual benefit that Alternative 2 must produce to make it the preffered choice?
a. This value cannot be determined from the data given
b. $23,500
c. $31,450
d. $35,708
Alternative 1
First cost of $50,000
Net Annual benefits = $18,000
Life = 10 years
Salvage value = $5,000
Interest = 15%
NPW = -50,000 + 18,000 (P/A, 15%, 10) + 5,000 (P/F, 15%, 10)
NPW = -50,000 + 18,000 (5.01877) + 5,000 (.24718) = 41,574
Alternative 2
First cost of $150,000
Life = 10 years
Salvage value = $50,000
Interest = 15%
Minimum amount of annual benefit that Alternative 2 must produce to make it the preferred choice and to do the NPW of Alternative 1 must be equal to the NPW of Alternative 2.
Let A is the Annual benefits of Alternative 2
NPW of Alternative 1 = NPW of Alternative 2
41,574 = -150,000 + A (P/A, 15%, 10) + 50,000 (P/F, 15%, 10)
41,574 = -150,000 + A (5.01877) + 50,000 (.24718)
41,574 = -150,000 + A (5.01877) + 12,359
41,574 = -137,641 + 5.01877A
179,215 = 5.01877A
A = 35,708
Answer – d. $35,708
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