You run a chain of retail stores and are looking for ways to save your company money. Last year you hired a consultant for $$20,000$ and after reviewing the business, the consultant suggested buying ERP $($Enterprise resource planning$)$ software. You are currently considering purchasing the software with an installed cost of $$275,000.$ ERP software helps to run your operations more efficiently, reducing costs over time. This cost will be depreciated straight$-$line to zero over the project$$s five$-$year life with no salvage value. The software is expected to save the firm $$100,000$ per year in operating costs, and the system requires an initial investment in net working capital of $$10,000.$

a$)$ If the tax rate is $21\%,$ what are the project$$s cash flows years $0-5?(4$ points$)$

b$)$ Given a required return of $8\mathrm{.}5\%,$ what is the NPV and IRR of this project?$(2$ pts$)$

c$)$ What is the payback period? $(2$ pts$)$

d$)$ Should you make the investment? Why or why not? $(1$ point$)$ Answer with an excel