Answer:
a. Internal Rate of Return
Annual Cash Inflows = (Net Savings - Depreciation) * ( 1 - Tax Rate) + (Depreciation * Tax Rate)
Net savings = Delivery Costs - Operating and Maintenance Costs with the Used Truck Â
= 32,000 - 21,000 Â
= $11,000
Depreciation = (Cost of used truck - Salvage value) / Useful life Â
= (13,000 - 2,000) / 3 Â
= $3,667
Annual Cash inflows = $7,000 as there are no taxes.
Use Excel to calculate IRR as shown in the attachment. Â
The cost of the truck is the outflow and the savings and the salvage value are inflows which means that the last inflow will be $13,000 because salvage value is added in the last year. Â
IRR = 69.408%
b. If the IRR is greater than the cost of capital or required rate of return, the project should be chosen.
c. The IRR of 69.408% is greater than the MARR of 34% so Nancy should buy the truck.