14. a. Net investment: $80,000
Year Revenues Operating Costs Depreciation Tax OEAT NCF
1 $100,000 $50,000 $11,432 $15,427 $23,141
$34,573 2 107,000 54,000 19,592 13,363 20,045
39,637 3 114,490 58,320 13,992 16,871 25,307
39,299 4 122,504 62,986 9,992 19,810 29,716
50,338
c. NPV = -$80,000 + $34,573(.833) + $39,637(.694)
Yes, build the plant because NPV > 0.
d. Payback calculation: