Moonrays, Inc. manufactures both normal and premium tube lights. The company allocates manufacturing overhead using a single plantwide rate with machine hours as the allocation base. Estimated overhead costs for the year are $106,000. Additional estimated information is given below. Normal Premium 21,000 38,000 Machine hours (MHr) Direct materials $60,000 $500,000 Calculate the predetermined overhead allocation rate. (Round your answer to the nearest cent.) O $5.05 per direct labor hour ho O $2.79 per machine hour O $0.19 per direct labor hour O $1.80 per machine hour