A onemonth summary of manufacturing costs for Grouper Company follows. Direct materials $33,000 Direct labour 16,500 Material handling costs 2,100 Product inspection and rework 2,600 Materials purchasing and inspection 500 Routine maintenance and equipment servicing 1,300 Repair of equipment 400 Classify each cost as valueadded or nonvalueadded. Direct materials Direct labour Material handling costs Product inspection and rework Materials purchasing and inspection Routine maintenance and equipment servicing Repair of equipment Sum the nonvalue-added costs. Sum of nonvalueadded costs $|:| What percentage of total costs is non-valueadded? (Round answer to 2 decimal places, 6.9. 15.25%.) Percentage of nonvalueadded costs to total cost l %