A sales engineer has the following alternatives to consider in touring his sales territory. a) Buy a new car for $14,500. Salvage value is expected to be about $5,000 after 3 years. Maintenance and insurance cost is $1000 in the first year and increases at the rate of $500/year in subsequent years. Daily operating expenses are $50/day b) Rent a similar car for $80/day Based on a 12% after-tax rate of return, how many days per year must he use the car to justify its purchase? You may assume that this sales engineer is in the 30% corporate incremental tax bracket. Use MACRS depreciation.