Ivanhoe Manufacturing, Inc., needs to purchase a new central air-conditioning system for a plant. There are two choices. The first system costs $63,000 and is expected to last 10 years, and the second system costs $83,000 and is expected to last 15 years. Assume that the opportunity cost of capital is 10 percent. (Round answers to 2 decimal places, e.g. 5,275.25.) System 1 System 2 Equivalent annual cost $ $ Which air-conditioning system should Ivanhoe purchase? Ivanhoe should purchase the