Trayne Corporation's sales office and manufacturing plant are located in State X.Trayne also maintains a manufacturing plant and sales office in State W.For purposes of apportionment, X defines payroll as all compensation paid to employees, including elective contributions to § 401(k) deferred compensation plans.Under the statutes of W, neither compensation paid to officers nor contributions to § 401(k) plans are included in the payroll factor.Trayne incurred the following personnel costs. Trayne's payroll factor for State X is: