Equipment with a cost of $60,000 will, if acquired, generate annual savings of $30,000 for six years,

Question:

Equipment with a cost of $60,000 will, if acquired, generate annual savings of $30,000 for six years, at which time it will have no further use or value. The firm has a marginal tax rate of 40% and requires a 10% rate of return. It uses straight-line amortization (ignore the half-year convention). Ignore inflation.
REQUIRED
A. What is the after-tax cash flow for each year?
B. What is the NPV of this investment?
C. What is the payback period?