I need to find the IRR not the Pv, I don't want the answer using excel, thank you in advance.

17. DuraTech Manufacturing is evaluating a process improvement project. The estimated receipts and disbursements associated with the project are shown below. MARR is 6 percent/year. 2 3 4 5 End of Year so $2,000 $4,000 S0 Receipts $3,000 $1,600 Disbursements S5.000 $1,000 $1,500 S600 $200 $300 a. What is the internal rate of return of this investment? b. What is the decision rule for judging the attractiveness of investments based on internal rate of return c. Should Tech implement the proposed process improvement