Assume Urgent Care paid $$42,000$ for X$-$ray equipment four years ago. The equipment was expected to have a useful life of $10$ years from the date of acquisition with annual operating costs of $$25,000.$ Technological advances have made the machine purchased four years ago obsolete with a zero salvage value. An improved X$-$ray device incorporating the new technology is available at an initial cost of $$50,000$ and annual operating costs of $$15,000.$ The new machine is expected to last only six years before it$,$ too, is obsolete. Asked to analyze the financial aspects of replacing the obsolete but still functional machine, an Urgent Care accountant prepared the following analysis. After looking over these numbers, the company$$s manager rejected the proposal.

Perform an analysis of relevant costs to determine whether the manager made the correct decision. Cost of new machine $.......................................................50,000)$

Advantage $($disadvantage$)$ of replacement. $....................................15$$$15,{200}_{{?}_{?}}$