Harper Electronics is considering investing in manufacturing equipment expected to cost $250,000. The equipment has an estimated useful life of four years and a salvage value of $25,000. It is expected to produce incremental cash revenues of $125,000 per year. Harper has an effective income tax rate of 30 percent and a desired rate of return of 10 percent. (PV of $1 and PVA of $1) (Use appropriate factor(s) from the tables provided.)

a. Determine the net present value and the present value index of the investment, assuming that Harper uses straight-line depreciation for financial and income tax reporting.

b. Determine the net present value and the present value index of the investment, assuming that Harper uses double-declining-balance depreciation for financial and income tax reporting.

c. Determine the payback period and unadjusted rate of return (use average investment), assuming that Harper uses straight-line depreciation.

d. Determine the payback period and unadjusted rate of return (use average investment), assuming that Harper uses double-declining-balance depreciation. (Note: Use average annual cash flow when computing the payback period and average annual income when determining the unadjusted rate of return.)