Sato Ridge Foods is interested in estimating the cost involved in hiring new employees for its retail stores. The following information is available regarding the additional costs of operating the company's Human Resource Department in May when there were 2 new hires Human Resource Department Manager salaries $ 3.400 Staff hourly wages 21,600 Supplies 600 Equipment depreciation 1.100 Office rental space 1.800 Total $28.500 Using account analysis, compute the expected incremental cost associated with hirings more employees in June than were hired in May assuming Start houdly wages and Supplies are the only variable costs? 511.100 56100 $18.500 $55.500 18.00