Solve this question.

A new municipal refuse-collection truck can be purchased for $84,000. Its expected useful life is six years, at which time its market value will be zero. Annual receipts less expenses will be approximately $18,000 per year over the six-year study period. At MARR of 19%, calculate the (1) future worth of the project, (2) return on investment of the project, (3) benefit-cost ratio of the project, and (4) internal rate of return of the project