also what is the NPV

The local franchise of Jiffy Lube is thinking of buying a new lift for $70,000 that would make it easier to access the oil filter in customers' cars and save labor. The savings would increase over the project's 3-year life, in line with the projected growth of the business: The machine is to be linearly depreciated to zero and will have no resale value after 3 years. The company uses a discount rate of 10% and has a tax rate of 21%