I dont get two of these questions. Any help appreciate it.

Jim owns a lawn care service. He would like to obtain a new heavy duty trailer to haul his equipment and materials from job to job. Hes found one that will suit his needs. The purchase price is $8,500. Jim is in a 28% tax bracket and sales taxes are 5%. The cost of capital for Jim to purchase the trailer is 8%. The trailer qualifies for 5 year MACRS depreciation method. Jim intends on using the equipment for 60 months. The salvage value of the trailer at the end of the use period is $4500. Jim has also found a dealer that is willing to lease the trailer to him for 60 months for $150 per month. The lease payments would be due at the beginning of the month. Determine if Jim should lease or buy this trailer.

3.What is the PW (8/12%) of the lease?

A.$5630

B.$5462

5.What is the total economic depreciation benefit for all 5 years? (include taxes)

A.

$6521

B.$7897