A forklift will last for only 2 more yeurs. It costs $5,100 a year to maintain. For $21,000 you can buy a new lift that can last for 10 years and should require maintenance costs of only $2,100 a year. a-1. Calculate the equivalent cost of owning and operating the forklift if the discount rate is 5% per year. Note: Do not round intermediate calculations. Round your answer to 2 decimal places. a-2, Should you replace the forklit? b-1. Calculate the equivalent cost of owning ond operating the forklift if the discount rate is 10% per year: Note: Do not round intermediate calculations. Round your answer to 2 decimal places. b-2. Should you replace the forklift