Please solve the following question show workings thnx. I would like it ASAP.

DYI Construction Co. is considering new inventory SVstem that will cost 950000. The system is expected to generate positivecash flows overthe Beit fog/ yeis in the amounts of $350,000 in year one, $325,000 in year two; $150,000 in year three, and $180,000 'n veer four. DYI's required rate 01 return is 8%. a. What is the discounted payback per'od of this projeci? b. What is the net present value of this project? c. What iS the modified internal rate Of return of this project? d. Given that NPV Of the project becomes negative at discount rate, what is the IRR Of the project using the linear interpolation formula? Please show all your workings.