Model B equipment cost $210,000 delivered and installed annual savings of $54,000 over the cost of operating the model A. The company still requires a return of at least 8% before taxes. Depreciated at a straight line rate of 20%. Model B equipment cost $210,000 delivered and installed annual savings of $54,000 over the cost of operating the model A. The company still requires a return of at least 8% before taxes. Depreciated at a straight line rate of 20%