Engineering Economy 7th Edition by Leland Blank ,Anthony Tarquin

Exercise 66

A construction company can purchase a piece of equipment for $50,000 and spend $100 per day in operating costs. The equipment will have a 5-year life with no salvage value. Alternatively, the company can lease the equipment for $400 per day. The number of days per year the company must require the equipment to justify its purchase at an interest rate of 8% per year is closest to:
A) 10 days
B) 42 days
C) 51 days
D) 68 days