Please help me, I have tried to get the answer to this problem a few times already, but my answer keeps coming out wrong. Please provide me with step by step instructions on how you got the answer. Thank you!

Last year (2013), Richter Condos installed a mechanized elevator for its tenants. The owner of the company, Ron Richter, recently returned from an industry equipment exhibition where he watched a computerized elevator demonstrated. He was impressed with the elevator's speed, comfort of ride, and cost efficiency. Upon returning from the exhibition, he asked his purchasing agent to collect price and operating cost data on the new elevator. In addition, he asked the company