Answer:
a) initial outlay = -$300,000
net cash flows years 1 - 8 = $52,500
discount rate = 9%
using a financial calculator, NPV = -$9,422, this means that the project should be rejected
b) In order for the project to be accepted, its NPV ≥ 0, therefore, the reduction in downtime should be worth at least $9,422 (at present day dollars).
If we analyze it on a yearly basis, the reduction in downtime should be worth $9,422 / 5.5348 (PV annuity, 9%, 8 periods) = $1,702.32