ABC Company is considering a project with initial investment $100,000 (a machine) and working capital $20,000. The project period is 4 years and the resale value of the machine is $20,000 by the end of the project period. The annual cash revenue and expenses are $40,000 and $5,000 respectively. The cost of capital and tax rate of ABC are 8% and 20% respectively.

a) What are the NPV and Discounted Payback of the project? (show calculations below)